1ResponseBody 和 RequestBody
1简介
@ResponseBody把后台pojo转换为json对象，返回到页面
@RequestBody接受前台json数据，把json数据自动封装javaBean
2案例
导包
添加json转换器
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<!--配置一个json的转换器，告诉springmvc使用jaskson来转换json-->
<property name="messageConverters">
<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>
</property>
</bean>
写一个jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>注册</title>
<script src="${pageContext.request.contextPath}/js/jquery-1.8.3.js"></script>
<script>
function register() {
//表单提交
var url = '${pageContext.request.contextPath}/stu/save.do';
var name = $('#name').val();
var sex = $('#sex').val();
var jsonObj = {name:name,sex:sex}
var parameters = JSON.stringify(jsonObj);
console.log(jsonObj);
console.log(parameters);
$.ajax({
type:'post',
url:url,
contentType:'application/json;charset=utf-8',
data:parameters,
success:function (respData) {
console.log(respData)
}
})
}
</script>
</head>
<body>
<%--name = oyb & sex = male = {"name":"oyb","sex":"male"}--%>
<form action="${pageContext.request.contextPath}/stu/save.do" method="post">
用户名:<input type="text" name="name" id="name"><br>
性别:<input type="text" name="sex" id="sex"><br>
<input type="button" value="提交" onclick="register()">
</form>
</form>
</body>
</html>
写一个StudentController
package oyb.Controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import oyb.model.Student;
@Controller
@RequestMapping("/stu")
public class StudentController {
@RequestMapping("/toReg")
public String toReg( Student stu){
System.out.println(stu);
return "stu/register";
}
@RequestMapping("/save")
/**
* @RequestBody:把json数据转成模型对象
*@ResponseBody 返回json数据，把对象转成json字符串返回客户端
*/
public @ResponseBody
Student save(@RequestBody Student stu){
System.out.println(stu);
return stu;
}
}
测试