Spring 远程调用Rest服务工具类，包含Get、Post、Put、Delete四种调用方式。
依赖jar
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.0.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.0.9.RELEASE</version>
</dependency>
RestTemplateUtils.java
package javax.utils; import java.util.Map; import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate; /**
* RestTemplate 远程调用工具类
*
* @author Logan
* @createDate 2019-02-08
*
*/
public class RestTemplateUtils { private static final RestTemplate restTemplate = new RestTemplate(); // ----------------------------------GET------------------------------------------------------- /**
* GET请求调用方式
*
* @param url 请求URL
* @param responseType 返回对象类型
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> get(String url, Class<T> responseType) {
return restTemplate.getForEntity(url, responseType);
} /**
* GET请求调用方式
*
* @param url 请求URL
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> get(String url, Class<T> responseType, Object... uriVariables) {
return restTemplate.getForEntity(url, responseType, uriVariables);
} /**
* GET请求调用方式
*
* @param url 请求URL
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> get(String url, Class<T> responseType, Map<String, ?> uriVariables) {
return restTemplate.getForEntity(url, responseType, uriVariables);
} /**
* 带请求头的GET请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> get(String url, Map<String, String> headers, Class<T> responseType, Object... uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return get(url, httpHeaders, responseType, uriVariables);
} /**
* 带请求头的GET请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> get(String url, HttpHeaders headers, Class<T> responseType, Object... uriVariables) {
HttpEntity<?> requestEntity = new HttpEntity<>(headers);
return exchange(url, HttpMethod.GET, requestEntity, responseType, uriVariables);
} /**
* 带请求头的GET请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> get(String url, Map<String, String> headers, Class<T> responseType, Map<String, ?> uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return get(url, httpHeaders, responseType, uriVariables);
} /**
* 带请求头的GET请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> get(String url, HttpHeaders headers, Class<T> responseType, Map<String, ?> uriVariables) {
HttpEntity<?> requestEntity = new HttpEntity<>(headers);
return exchange(url, HttpMethod.GET, requestEntity, responseType, uriVariables);
} // ----------------------------------POST------------------------------------------------------- /**
* POST请求调用方式
*
* @param url 请求URL
* @param responseType 返回对象类型
* @return
*/
public static <T> ResponseEntity<T> post(String url, Class<T> responseType) {
return restTemplate.postForEntity(url, HttpEntity.EMPTY, responseType);
} /**
* POST请求调用方式
*
* @param url 请求URL
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType) {
return restTemplate.postForEntity(url, requestBody, responseType);
} /**
* POST请求调用方式
*
* @param url 请求URL
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType, Object... uriVariables) {
return restTemplate.postForEntity(url, requestBody, responseType, uriVariables);
} /**
* POST请求调用方式
*
* @param url 请求URL
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
return restTemplate.postForEntity(url, requestBody, responseType, uriVariables);
} /**
* 带请求头的POST请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return post(url, httpHeaders, requestBody, responseType, uriVariables);
} /**
* 带请求头的POST请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
return post(url, requestEntity, responseType, uriVariables);
} /**
* 带请求头的POST请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return post(url, httpHeaders, requestBody, responseType, uriVariables);
} /**
* 带请求头的POST请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
return post(url, requestEntity, responseType, uriVariables);
} /**
* 自定义请求头和请求体的POST请求调用方式
*
* @param url 请求URL
* @param requestEntity 请求头和请求体封装对象
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, HttpEntity<?> requestEntity, Class<T> responseType, Object... uriVariables) {
return restTemplate.exchange(url, HttpMethod.POST, requestEntity, responseType, uriVariables);
} /**
* 自定义请求头和请求体的POST请求调用方式
*
* @param url 请求URL
* @param requestEntity 请求头和请求体封装对象
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> post(String url, HttpEntity<?> requestEntity, Class<T> responseType, Map<String, ?> uriVariables) {
return restTemplate.exchange(url, HttpMethod.POST, requestEntity, responseType, uriVariables);
} // ----------------------------------PUT------------------------------------------------------- /**
* PUT请求调用方式
*
* @param url 请求URL
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, Class<T> responseType, Object... uriVariables) {
return put(url, HttpEntity.EMPTY, responseType, uriVariables);
} /**
* PUT请求调用方式
*
* @param url 请求URL
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, Object requestBody, Class<T> responseType, Object... uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
return put(url, requestEntity, responseType, uriVariables);
} /**
* PUT请求调用方式
*
* @param url 请求URL
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
return put(url, requestEntity, responseType, uriVariables);
} /**
* 带请求头的PUT请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return put(url, httpHeaders, requestBody, responseType, uriVariables);
} /**
* 带请求头的PUT请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
return put(url, requestEntity, responseType, uriVariables);
} /**
* 带请求头的PUT请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return put(url, httpHeaders, requestBody, responseType, uriVariables);
} /**
* 带请求头的PUT请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
return put(url, requestEntity, responseType, uriVariables);
} /**
* 自定义请求头和请求体的PUT请求调用方式
*
* @param url 请求URL
* @param requestEntity 请求头和请求体封装对象
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, HttpEntity<?> requestEntity, Class<T> responseType, Object... uriVariables) {
return restTemplate.exchange(url, HttpMethod.PUT, requestEntity, responseType, uriVariables);
} /**
* 自定义请求头和请求体的PUT请求调用方式
*
* @param url 请求URL
* @param requestEntity 请求头和请求体封装对象
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> put(String url, HttpEntity<?> requestEntity, Class<T> responseType, Map<String, ?> uriVariables) {
return restTemplate.exchange(url, HttpMethod.PUT, requestEntity, responseType, uriVariables);
} // ----------------------------------DELETE------------------------------------------------------- /**
* DELETE请求调用方式
*
* @param url 请求URL
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, Class<T> responseType, Object... uriVariables) {
return delete(url, HttpEntity.EMPTY, responseType, uriVariables);
} /**
* DELETE请求调用方式
*
* @param url 请求URL
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, Class<T> responseType, Map<String, ?> uriVariables) {
return delete(url, HttpEntity.EMPTY, responseType, uriVariables);
} /**
* DELETE请求调用方式
*
* @param url 请求URL
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, Object requestBody, Class<T> responseType, Object... uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
return delete(url, requestEntity, responseType, uriVariables);
} /**
* DELETE请求调用方式
*
* @param url 请求URL
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody);
return delete(url, requestEntity, responseType, uriVariables);
} /**
* 带请求头的DELETE请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Class<T> responseType, Object... uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return delete(url, httpHeaders, responseType, uriVariables);
} /**
* 带请求头的DELETE请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Class<T> responseType, Object... uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(headers);
return delete(url, requestEntity, responseType, uriVariables);
} /**
* 带请求头的DELETE请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Class<T> responseType, Map<String, ?> uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return delete(url, httpHeaders, responseType, uriVariables);
} /**
* 带请求头的DELETE请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Class<T> responseType, Map<String, ?> uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(headers);
return delete(url, requestEntity, responseType, uriVariables);
} /**
* 带请求头的DELETE请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return delete(url, httpHeaders, requestBody, responseType, uriVariables);
} /**
* 带请求头的DELETE请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Object... uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
return delete(url, requestEntity, responseType, uriVariables);
} /**
* 带请求头的DELETE请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, Map<String, String> headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setAll(headers);
return delete(url, httpHeaders, requestBody, responseType, uriVariables);
} /**
* 带请求头的DELETE请求调用方式
*
* @param url 请求URL
* @param headers 请求头参数
* @param requestBody 请求参数体
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, HttpHeaders headers, Object requestBody, Class<T> responseType, Map<String, ?> uriVariables) {
HttpEntity<Object> requestEntity = new HttpEntity<Object>(requestBody, headers);
return delete(url, requestEntity, responseType, uriVariables);
} /**
* 自定义请求头和请求体的DELETE请求调用方式
*
* @param url 请求URL
* @param requestEntity 请求头和请求体封装对象
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, HttpEntity<?> requestEntity, Class<T> responseType, Object... uriVariables) {
return restTemplate.exchange(url, HttpMethod.DELETE, requestEntity, responseType, uriVariables);
} /**
* 自定义请求头和请求体的DELETE请求调用方式
*
* @param url 请求URL
* @param requestEntity 请求头和请求体封装对象
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> delete(String url, HttpEntity<?> requestEntity, Class<T> responseType, Map<String, ?> uriVariables) {
return restTemplate.exchange(url, HttpMethod.DELETE, requestEntity, responseType, uriVariables);
} // ----------------------------------通用方法------------------------------------------------------- /**
* 通用调用方式
*
* @param url 请求URL
* @param method 请求方法类型
* @param requestEntity 请求头和请求体封装对象
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，按顺序依次对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> exchange(String url, HttpMethod method, HttpEntity<?> requestEntity, Class<T> responseType, Object... uriVariables) {
return restTemplate.exchange(url, method, requestEntity, responseType, uriVariables);
} /**
* 通用调用方式
*
* @param url 请求URL
* @param method 请求方法类型
* @param requestEntity 请求头和请求体封装对象
* @param responseType 返回对象类型
* @param uriVariables URL中的变量，与Map中的key对应
* @return ResponseEntity 响应对象封装类
*/
public static <T> ResponseEntity<T> exchange(String url, HttpMethod method, HttpEntity<?> requestEntity, Class<T> responseType, Map<String, ?> uriVariables) {
return restTemplate.exchange(url, method, requestEntity, responseType, uriVariables);
} /**
* 获取RestTemplate实例对象，可*调用其方法
*
* @return RestTemplate实例对象
*/
public static RestTemplate getRestTemplate() {
return restTemplate;
} }
测试示例如下：
RestTest.java
package test; import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import org.apache.commons.io.FileUtils;
import org.junit.Test;
import org.springframework.core.io.FileSystemResource;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap; import com.alibaba.fastjson.JSONObject; import utils.RestTemplateUtils; /**
* RestTemplate 功能测试类
*
* @author Logan
* @createDate 2019-02-08
*
*/
public class RestTest { /**
* 测试HTTPS请求访问博客园
*/
@Test
public void test() {
String url = "https://www.cnblogs.com/{id}/p/{pageName}.html";
String id = "jonban";
List<String> pages = new ArrayList<>();
pages.add("rest");
pages.add("jsoup");
pages.add("sms");
pages.add("rememberMe");
pages.add("properties");
pages.add("async"); for (String pageName : pages) {
ResponseEntity<String> entity = RestTemplateUtils.get(url, String.class, id, pageName);
System.out.println(entity.getStatusCode());
System.out.println(entity.getBody());
} } /**
* 测试带请求头参数Headers的GET请求，POST类似
*/
@Test
public void testHeaders() {
String url = "http://127.0.0.1:8080/test/Logan?age=16";
Map<String, String> headers = new HashMap<>();
headers.put("appId", "Basic MyAppId");
ResponseEntity<String> entity = RestTemplateUtils.get(url, headers, String.class);
System.out.println(entity.getStatusCode());
System.out.println(entity.getBody());
} /**
* 测试普通表单参数的POST请求
*/
@Test
public void sayHello() {
String url = "http://127.0.0.1:8080/test/sayHello";
MultiValueMap<String, Object> requestBody = new LinkedMultiValueMap<>();
requestBody.add("name", "Logan");
requestBody.add("age", 12);
ResponseEntity<JSONObject> response = RestTemplateUtils.post(url, requestBody, JSONObject.class); System.out.println(response.getStatusCode());
System.out.println(response.getBody());
} /**
* 测试JSON格式请求体Body方式POST请求
*/
@Test
public void sayHelloBody() {
String url = "http://127.0.0.1:8080/test/sayHelloBody";
JSONObject requestBody = new JSONObject();
requestBody.put("name", "Logan");
requestBody.put("age", 16);
ResponseEntity<JSONObject> response = RestTemplateUtils.post(url, requestBody, JSONObject.class); System.out.println(response.getStatusCode());
System.out.println(response.getBody());
} /**
* 测试上传文件
*/
@Test
public void uploadFile() {
String url = "http://127.0.0.1:8080/test/uploadFile";
MultiValueMap<String, Object> requestBody = new LinkedMultiValueMap<>();
requestBody.add("uploadPath", "G:\\Temp\\Test");
requestBody.add("file", new FileSystemResource("G:\\Java\\JavaStyle.xml"));
requestBody.add("file2", new FileSystemResource("G:\\Java\\jad.exe")); ResponseEntity<JSONObject> response = RestTemplateUtils.post(url, requestBody, JSONObject.class); System.out.println(response.getStatusCode());
System.out.println(response.getBody());
} @Test
public void downloadFile() {
try {
String url = "http://127.0.0.1:8080/test/downloadFile?filePath={filePath}&fileName={fileName}"; String filePath = "G:\\Java";
String fileName = "JavaStyle.xml"; ResponseEntity<byte[]> response = RestTemplateUtils.get(url, byte[].class, filePath, fileName);
System.out.println(response.getStatusCode());
System.out.println(response.getHeaders().getContentType()); // 如果返回时文本内容，则直接输出
if ("text/html;charset=UTF-8".equals(response.getHeaders().getContentType().toString())) {
System.out.println(new String(response.getBody(), "UTF-8"));
} // 输出响应内容到本地文件
else { File file = new File("G:\\Temp\\Test", fileName);
if (HttpStatus.OK.equals(response.getStatusCode())) {
FileUtils.writeByteArrayToFile(file, response.getBody());
}
}
} catch (IOException e) {
e.printStackTrace();
} } /**
* 测试下载阿里巴巴的fastjson-1.2.56.jar
*/
@Test
public void downloadFile2() {
try {
String url = "http://central.maven.org/maven2/com/alibaba/fastjson/1.2.56/fastjson-1.2.56.jar"; ResponseEntity<byte[]> response = RestTemplateUtils.get(url, byte[].class);
System.out.println(response.getStatusCode()); // 下载文件路径，可根据本地磁盘位置选择下载路径
File file = new File("G:\\Temp\\Test\\fastjson-1.2.56.jar");
if (HttpStatus.OK.equals(response.getStatusCode())) {
FileUtils.writeByteArrayToFile(file, response.getBody());
}
} catch (IOException e) {
e.printStackTrace();
} } }
测试远程服务器接口示例如下：
1. 新建Maven项目 test-server
2. pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.java</groupId>
<artifactId>test-server</artifactId>
<version>1.0.0</version> <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
</parent> <dependencies> <!-- Spring Boot -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.56</version>
</dependency> <!-- 热部署 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
<version>1.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency> </dependencies> <build>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin> <plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
3. TestServerStarter.java
package com.java; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication; /**
* 测试服务器主启动类
*
* @author Logan
* @createDate 2019-02-08
*
*/
@SpringBootApplication
public class TestServerStarter { public static void main(String[] args) {
SpringApplication.run(TestServerStarter.class, args);
} }
4. Person.java
package com.java.entity; /**
* 测试实体类
*
* @author Logan
* @createDate 2019-02-08
*
*/
public class Person { private String name; private int age; public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public int getAge() {
return age;
} public void setAge(int age) {
this.age = age;
} @Override
public String toString() {
return "Person [name=" + name + ", age=" + age + "]";
} }
5. UploadConfig.java
package com.java.config; import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.commons.CommonsMultipartResolver; /**
* 上传文件配置
*
* @author Logan
* @createDate 2019-02-08
*
*/
@Configuration
public class UploadConfig { @Bean
public CommonsMultipartResolver multipartResolver() {
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(); // 设置最大上传文件大小为4GB
multipartResolver.setMaxUploadSize(4294967296l);
return multipartResolver;
} }
6. TestController.java
package com.java.controller; import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.commons.CommonsMultipartFile; import com.java.entity.Person; /**
* 测试服务器测试接口类
*
* @author Logan
* @createDate 2019-02-08
*
*/
@RestController
@RequestMapping("/test")
public class TestController { @Autowired
private HttpServletRequest request; @GetMapping("/{name}")
public Person test(@PathVariable("name") String name, int age) {
String appId = request.getHeader("appId");
System.out.println("appId: " + appId); Person person = new Person();
person.setName(name);
person.setAge(age);
System.out.println(person); return person;
} @PostMapping("/sayHello")
public Person sayHello(Person person) {
System.out.println(person);
return person;
} @PostMapping("/sayHelloBody")
public Person sayHelloBody(@RequestBody Person person) {
System.out.println(person);
return person;
} @RequestMapping("/uploadFile")
public Map<String, Object> uploadFile(@RequestParam(required = true) CommonsMultipartFile file, @RequestParam(required = true) CommonsMultipartFile file2, String uploadPath) {
Map<String, Object> result = new HashMap<String, Object>();
try { // 上傳文件
File path = new File(uploadPath);
if (!path.isDirectory() || !path.exists()) {
path.mkdirs();
}
File outFile = new File(uploadPath, file.getOriginalFilename());
file.transferTo(outFile); File outFile2 = new File(uploadPath, file2.getOriginalFilename());
file2.transferTo(outFile2); List<String> files = new ArrayList<>();
files.add(outFile.getAbsolutePath());
files.add(outFile2.getAbsolutePath()); result.put("successful", true);
result.put("files", files);
} catch (Exception e) {
e.printStackTrace();
result.put("successful", false);
result.put("msg", e.getMessage());
}
return result;
} @GetMapping("/downloadFile")
public void downloadFile(HttpServletResponse response, String filePath, String fileName) {
File file = new File(filePath, fileName);
if (file.exists() && file.isFile()) { try (
OutputStream out = response.getOutputStream();
FileInputStream in = new FileInputStream(file);
) { // 对文件名进行URL转义，防止中文乱码
fileName = URLEncoder.encode(fileName, "UTF-8"); // 空格用URLEncoder.encode转义后会变成"+"，所以要替换成"%20"，浏览器会解码回空格
fileName = fileName.replace("+", "%20"); // "+"用URLEncoder.encode转义后会变成"%2B"，所以要替换成"+"，浏览器会解码回"+"
fileName = fileName.replace("%2B", "+");
response.setContentType("application/x-msdownload;charset=UTF-8");
response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
IOUtils.copy(in, out);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} // 无法下载时给出提示信息
else {
response.setContentType("text/html;charset=UTF-8"); try (
PrintWriter writer = response.getWriter();
) {
writer.write("找不到对应文件，请确认后重试！");
writer.flush();
} catch (IOException e) {
e.printStackTrace();
}
} } }
7. 运行 TestServerStarter.java ，启动测试服务器。
运行RestTest.java 类中对应的测试方法，可以测试对应功能，各种情况典型示例已给出。
.