spring mvc: json练习
本例需要用到的json包：
如下：
jackson-databind
jackson-core
jackson-annotations <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.7.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.7.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.7.4</version>
</dependency>
同时需要Bean视图名的解析支持
org.springframework.web.servlet.view.BeanNameViewResolver
xml配置如下：
web.xml
<web-app>
<display-name>Archetype Created Web Application</display-name> <!--配置文件路径-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param> <!-- 字符过滤器 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> <!-- 监听转发 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>json</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>json</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> </web-app>
applicatoinContext.xml自动Bean引入
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 默认：注解映射支持 -->
<mvc:annotation-driven/>
<!-- 静态资源配置 -->
<mvc:resources location="/pages/**" mapping="/pages/"/> <!-- 自动扫描包名,controller -->
<context:component-scan base-package="json"/> </beans>
json-servlet.xml Bean视图名的解析
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd"> <!-- bean视图解析 -->
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/> </beans>
Student.java
package json;
public class Student {
String name;
Integer age;
String gender;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
}
StudentController.java
package json; import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody; @Controller
@RequestMapping(value="/student")
public class StudentController { @RequestMapping(value="/one", method=RequestMethod.GET)
@ResponseBody
public Student getStudent()
{
Student student = new Student();
student.setAge(25);
student.setGender("男");
student.setName("张三");
return student;
} @RequestMapping(value="/all", method=RequestMethod.GET)
@ResponseBody
public Map<String, Object> getStudentAll()
{
Map<String, Object> maps = new HashMap<String, Object>();
List<Student> list = new ArrayList<Student>();
Student student1 = new Student();
student1.setAge(25);
student1.setGender("男");
student1.setName("张三");
list.add(student1); student1.setAge(26);
student1.setGender("男");
student1.setName("李四");
list.add(student1); maps.put("author", "田七");
maps.put("school", "suzhou");
maps.put("list", list); return maps;
}
}
访问地址：
http://localhost:8080/gugua3/student/one
{"name":"张三","age":25,"gender":"男"}
http://localhost:8080/gugua3/student/all
{"school":"suzhou","author":"田七","list":[{"name":"李四","age":26,"gender":"男"},{"name":"李四","age":26,"gender":"男"}]}