我想使用Spring,jQuery,Ajax和Json做一个非常简单的流程。但我无法向Spring控制器发送POST请求。当我尝试使用消耗并在@RequestMapping中产生时,我的eclipse也显示编译错误。我没有使用maven。这是一个简单的eclipse中的动态web项目。我使用弹簧3.0.5罐。不能发送POST请求到Spring控制器使用JQuery,Ajax和Json
HTML页面。
<html>
<head>
<style>
div {
border: 1px solid #000000;
}
</style>
<script src="/JSONProject/js/jquery-1.11.0.min.js"></script>
<script>
var user="";
var pwd1="";
var json="";
var strJson="";
$(document).ready(function(){
$("#button").click(function(){
console.log("inside click");
user=$("#userName").val();
pwd1=$("#password").val();
json={username:user,password:pwd1};
console.log("json: "+json);
strJson=JSON.stringify(json);
console.log("strJson: "+strJson);
$.ajax({
type: "POST",
url: "http://localhost:8080/JSONProject/add.html",
contentType: 'application/json',
data: JSON.stringify(json)
})
.done(function(resultUserDTO) {
JSON.stringify(resultUserDTO)
alert("result: "+resultUserDTO);
});
});
});
</script>
</head>
<body>
<FORM>
Please enter your text:
<BR>
<div >
<label id="uName">Username</label>
<input id="userName"/>
<br>
<label id="pwd">Password</label>
<input id="password" type="Password" id="pwd"/>
</div>
<BR>
<INPUT id="button" TYPE="SUBMIT" VALUE="Submit">
</FORM>
</body>
</html>
控制器:
package demo.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.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import demo.model.Login;
@Controller
public class HelloWorldController {
Login users;
@RequestMapping("/hello")
public ModelAndView helloWorld() {
String message = "Hello World, Spring 3.0!";
System.out.println("Inside controller");
return new ModelAndView("hello", "message", message);
}
/**
* Handles POST request
*/
@RequestMapping(value = "/add",method = RequestMethod.POST ,consumes = "application/json")
public String processJson(@RequestBody String requestBody){
return "Handled application/json request ";
}
}
我收到以下编译错误:
属性消耗是未定义注释类型RequestMapping
的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>Spring3MVC</display-name>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
</web-app>
为spring-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
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-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:component-scan base-package="demo.controller" />
<mvc:annotation-driven />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".htm" />
</bean>
</beans>
的index.jsp
<html>
<head>
<title>Spring with ajax</title>
</head>
<body>
<a href="hello.html">Say Hello</a>
</body>
</html>
当我点击的index.jsp hello.html的链接,打开hello.html的,我也得到了控制方法的syso处理“\ hello”并获取。但是,当我使用jQuery发出POST请求时,我仍然看到处理“\ hello”的方法的syso并在控制台上获取方法..
真的很困惑。 请帮忙 提前谢谢!
在给出建议后新的更新代码。代码已经编译。但是不要调用POST处理程序。 POST处理程序中的Syso未在eclipse控制台上打印。
控制器:
package demo.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.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import demo.model.Login;
@Controller
public class HelloWorldController {
Login users;
@RequestMapping("/hello")
public ModelAndView helloWorld() {
String message = "Hello World, Spring 3.0!";
System.out.println("Inside controller");
return new ModelAndView("hello", "message", message);
}
/**
* Handles request for adding two numbers
*/
@RequestMapping(value = "/add",method = RequestMethod.POST ,consumes = "application/json",produces = "application/json")
public @ResponseBody String processJson(@RequestBody String requestBody){
System.out.println("inside controller 2");
return "Handled application/json request ";
}
}
hello.html的:
<html>
<head>
<style>
div {
border: 1px solid #000000;
}
</style>
<script src="/JSONProject/js/jquery-1.11.0.min.js"></script>
<script>
var user="";
var pwd1="";
var json="";
var strJson="";
$(document).ready(function(){
$("#button").click(function(){
console.log("inside click");
user=$("#userName").val();
pwd1=$("#password").val();
json={username:user,password:pwd1};
console.log("json: "+json);
strJson=JSON.stringify(json);
console.log("strJson: "+strJson);
$.ajax({
type: "POST",
url: "http://localhost:8080/JSONProject/add.html",
contentType: 'application/json',
data: JSON.stringify(json)
})
.done(function(resultUserDTO) {
JSON.stringify(resultUserDTO)
alert("result: "+resultUserDTO);
});
});
});
</script>
</head>
<body>
<FORM method="post">
Please enter your text:
<BR>
<div >
<label id="uName">Username</label>
<input id="userName"/>
<br>
<label id="pwd">Password</label>
<input id="password" type="Password" id="pwd"/>
</div>
<BR>
<INPUT id="button" TYPE="SUBMIT" VALUE="Submit">
</FORM>
</body>
</html>
PS:我已经使用3.2.0版
我不太记得这方面的很多,但
如果你遇到编译错误,你认为你的程序可以做什么? –
我认为问题在于您将ajax调用发送给“/JSONProject/add.html”,但您的控制器中的映射是“/ add”。我假设你的WAR上下文是'JSONProject',所以第一部分是好的,但除非你在你的配置中做了一些我没有看到的东西,Spring MVC在它的映射上不使用'.html'扩展名。我怀疑如果您使用Chromes开发工具或FireFox的FireBug之类的东西,看看您为AJAX调用返回的回应是什么,那么您将获得404 Not Found。 – CodeChimp