Java 无法使用ajax在spring mvc的jsp上发布结果
我在将SpringMVC与ajax耦合时遇到问题。我想创建一个简单的计算器,提供给JSP中的数字,并将它们发布出来,得到结果的总和。这些值被正确发送(根据文章底部的日志),但我无法在jsp页面上显示结果 我的代码: HelloController.javaJava 无法使用ajax在spring mvc的jsp上发布结果,java,ajax,jsp,spring-mvc,Java,Ajax,Jsp,Spring Mvc,我在将SpringMVC与ajax耦合时遇到问题。我想创建一个简单的计算器,提供给JSP中的数字,并将它们发布出来,得到结果的总和。这些值被正确发送(根据文章底部的日志),但我无法在jsp页面上显示结果 我的代码: HelloController.java @Controller @RequestMapping("/springMVCTest/") public class HelloController { private final static Logger logger = L
@Controller
@RequestMapping("/springMVCTest/")
public class HelloController {
private final static Logger logger = Logger.getLogger(HelloController.class.getName());
@Resource(name = "addService")
private MathClass mathClass;
@RequestMapping(value = "test", method = RequestMethod.GET)
public String printWelcome(ModelMap model) {
model.addAttribute("message", "Hello world!");
logger.log(Level.INFO, "get");
return "hello";
}
@RequestMapping(value = "test", method = RequestMethod.POST)
public @ResponseBody Integer add(@RequestParam(value = "inputNumber1", required = true) Integer x,
@RequestParam(value = "inputNumber2", required = true) Integer y, ModelMap model) {
logger.log(Level.INFO, "x: " + x + " y: " + y + " sum: " + mathClass.add(x,y));
return mathClass.add(x,y);
}
}
MathClass.java
@服务(“添加服务”)
公共类数学类{
public Integer add(Integer x, Integer y){
return x+y;
}
}
hello.jsp
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<body>
<h1>${message}</h1>
<div>
Add Two Numbers:
<br>
<input id="inputNumber1" name="inputNumber1" type="text" size="5"> +
<input id="inputNumber2" name="inputNumber2" type="text" size="5">
<br>
<input id="submitButton" type="submit" value="Add">
<br>
<span id="sum">result</span>
</div>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script type="text/javascript">
$('document').ready(function(){
$('#submitButton').click(function(){
$.post("http://localhost:8080/springMVCTest/test",
{
inputNumber1: $("#inputNumber1").val(),
inputNumber2: $("#inputNumber2").val()
},
function(data){
alert(data);
$("#sum").text(data);
}
);
//
});
});
</script>
</body>
</html>
java类中的计算是正常的,但是总和没有发送到JSP。您知道为什么会发生这种情况吗
编辑:
根据Chrome Inspector,我得到了406个不可接受的响应。我发现,我没有包含在pom.xml jackson映射器asl中,这就是它不起作用的原因。你检查了你得到的http响应(如果有的话)了吗?我不确定如何做。但是我做了什么,在ajax$.post中而不是函数(数据){警报(数据);$(“#总和”).text(数据);}我简单地使用了警报函数,并弹出了消息,因此根据$.post api方法finished with successWhat's response status?日志可能会显示正确的结果,但这并不保证任何事情。您可以使用firebug查看浏览器和服务器之间的http通信。
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
<!--http://www.springframework.org/schema/cache -->
<!--http://www.springframework.org/schema/cache/spring-cache.xsd">-->
<context:annotation-config/>
<context:component-scan base-package="com.springapp.mvc"/>
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Spring MVC Application</display-name>
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
Mar 27, 2014 9:29:12 PM com.springapp.mvc.HelloController printWelcome
INFO: get
Mar 27, 2014 9:29:15 PM com.springapp.mvc.HelloController add
INFO: x: 2 y: 32 sum: 34