答:Spring 3,Ajax和JQuery:为什么我的请求没有达到我的控制器?
我的春天3 Java的Web应用程序是 “极致”。我不得不为我的JQuery的电话联系弹簧3 Java服务器端组件:
$.post("/test_ajax", {state:"Alaska"});
我需要把“上下文根”(又名webapp的名称)的网址:
$.post("/acme/test_ajax", {state:"Alaska"});
我在学习Spring 3,Ajax和JQuery。我为自己制作了一个小型webapp,“acme”,以了解如何连接3种技术。从我的日志语句看起来处理器方法控制器中的getAddressList()HelloController在JQuery POST请求后没有被调用。
我开始做我的JQuery电话为:
$.post("/test_ajax", {state:"Alaska"});
我的代码是下面引用
任何线索将不胜感激。 在此先感谢 史蒂夫
的hello.jsp
<html>
<head>
<title>ACME JSP</title>
<script language = "JavaScript" src = "../acme/js/jquery-1.7.js"></script>
<script language = "JavaScript">
function test(){
$("#div1").replaceWith("Text Replaced With Javascript");
$.post("/test_ajax", {state:"Alaska"});
}
</script>
</head>
<body>
<h1>Hello.jsp: ${message}</h1>
<div id = "div1">
Original Text
</div>
<input type="submit" value="Test" onclick="test()" />
</body>
</html>
HelloController.java:
package com.acme.controller;
import javax.annotation.Resource;
import javax.servlet.http.*;
import org.springframework.stereotype.Controller;
import org.springframework.validation.*;
import org.springframework.ui.ModelMap;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.apache.log4j.Logger;
@Controller
public class HelloController {
private static final Logger logger = Logger.getLogger(HelloController.class);
@RequestMapping({"/","/hello"})
public String home(ModelMap model) {
logger.debug("Started...");
model.put("message","Hello From The Spring 3.1 Controller!");
return "hello";
}
@RequestMapping(value = "/test_ajax", method = RequestMethod.POST)
public @ResponseBody String getAddressList(@RequestParam(required=true) String state,
ModelMap model ) {
logger.debug("started...");
logger.debug("State: " + state);
String a_string = "Test String From Spring And Ajax!";
return a_string;
}
}// end class HelloController
极致-servlet.xml中:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
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">
<context:component-scan base-package="com.acme.controller" />
<mvc:resources mapping = "/**" location = "/"/>
<mvc:annotation-driven/>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name = "prefix" value = "/jsp/"/>
<property name = "suffix" value = ".jsp"/>
</bean>
</beans>
web.xml中:
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name>ACME Web Application</display-name>
<servlet>
<servlet-name>acme</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>acme</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- Help Find The Spring Config Files -->
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/acme-servlet.xml</param-value>
</context-param>
</web-app>
的pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.acme</groupId>
<artifactId>acme</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>ACME webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2-rev-1</version>
<exclusions>
<exclusion>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jstl-impl</artifactId>
<version>1.2</version>
<exclusions>
<exclusion>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- Spring 3.1.1 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.1.1.RELEASE</version>
</dependency>
<!-- Spring Security -->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>3.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>3.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>3.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-ldap</artifactId>
<version>3.1.0.RELEASE</version>
</dependency>
<!-- Jackson JSON Mapper -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.6.4</version>
</dependency>
</dependencies>
<build>
<finalName>acme</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
我还在学习这些东西全部3,只是用jQuery和Ajax开始。我不太了解其他帖子。你可以更多地分解你的答案吗?你是说我需要一个来自JQuery的库/ *。js文件,而不仅仅是我有或者你说我需要更改我的代码?我正在使用这篇文章来帮助我学习,而这正是我之后对我的测试程序进行建模的原因。它没有提及任何关于插件的内容。 http://maxheapsize.com/2010/07/20/spring-3-mvc-ajax-and-jquery-magic-or-better-simplicity/ – Steve
当然:)基本上,一个jQuery插件是* .js文件,你在你的HTML中“导入”。魔术般地,你将使用$ global获得你需要的功能。但是我的错误是,它不是一个jQuery插件,它是一个外部库,与我之前说的没什么不同。 在评论中,有人提到使用浏览器本机JSON函数,如JSON.stringify()。值得一试。 –
所以,如果我正确理解你,我发送一个JavaScript字符串/对象,所以Spring忽略它,而不是调用处理程序。所以,我需要将POST参数“state”作为JSON字符串发送? – Steve