SpringMVC中的ResponseBody和RequestBody介紹
阿新 • • 發佈：2019-04-05
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1ResponseBody 和 RequestBody
1簡介
@ResponseBody把後臺pojo轉換為json對象，返回到頁面
@RequestBody接受前臺json數據，把json數據自動封裝javaBean
2案例
導包
添加json轉換器
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> <!--配置一個json的轉換器，告訴springmvc使用jaskson來轉換json--><property name="messageConverters"> <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean> </property> </bean>
寫一個jsp頁面
<%@ page contentType="text/html;charset=UTF-8" language="java" %><html> <head> <title>註冊</title> <script src="${pageContext.request.contextPath}/js/jquery-1.8.3.js"></script> <script> function register() { //表單提交 var url = ‘${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"> 用戶名:<input type="text" name="name" id="name"><br> 性別:<input type="text" name="sex" id="sex"><br> <input type="button" value="提交" onclick="register()"> </form> </form> </body> </html>
寫一個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數據轉成模型對象 *@ResponseBody 返回json數據，把對象轉成json字符串返回客戶端 */ public @ResponseBody Student save(@RequestBody Student stu){ System.out.println(stu); return stu; } }
測試
SpringMVC中的ResponseBody和RequestBody介紹