Java @SpringMVC4中的ResponseBody发送字符串,但不向客户端发送任何其他对象
Spring控制器可以轻松地向客户端ajax/angularjs发送字符串类型的对象,但不能发送任何其他对象 我在项目中使用了SpringMVC4.1.4、Maven、tiles、mysql、hibernate、jsp和ajax技术。 请帮我解决这个问题 web.xmlJava @SpringMVC4中的ResponseBody发送字符串,但不向客户端发送任何其他对象,java,ajax,spring,Java,Ajax,Spring,Spring控制器可以轻松地向客户端ajax/angularjs发送字符串类型的对象,但不能发送任何其他对象 我在项目中使用了SpringMVC4.1.4、Maven、tiles、mysql、hibernate、jsp和ajax技术。 请帮我解决这个问题 web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
<?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">
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
login.jsp
<html>
<header>
</header>
<body>
<script type="text/javascript" src="/WEB-INF/js/jquery-1.11.2.js"></script>
<script src="http://code.jquery.com/jquery-1.10.2.js"></script>
<script src="http://code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
<input type="button" value="hello" onclick = "test()"/>
<input type="text" id="map"/>
<script type="text/javascript">
function test(){
console.log("enter into test function of ajax")
var para = "branchType=rohit";
alert("abc");
$.ajax({
type: "POST",
url: "/MyLogistics/hello.html",
dataType: "json",
/* data : JSON.stringify(user), */
contentType: "application/json",
data: para,
success: function(response){
// we have the response
$('#map').val(response.value2);
alert(response);
},
error: function(e){
alert('Error: ' + e.error);
}
});
}
</script>
</body>
</html>
功能测试(){
log(“进入ajax的测试功能”)
var para=“branchType=rohit”;
警报(“abc”);
$.ajax({
类型:“POST”,
url:“/MyLogistics/hello.html”,
数据类型:“json”,
/*数据:JSON.stringify(用户)*/
contentType:“应用程序/json”,
数据:第,
成功:功能(响应){
//我们得到了答复
$('#map').val(response.value2);
警报(响应);
},
错误:函数(e){
警报(“错误:”+e.Error);
}
});
}
loginController.java
package com.mylogistics.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/index.html")
public class IndexController {
@RequestMapping
public String getIndexPage() {
System.out.println("IndexController");
return "index";
}
}
package com.mylogistics.controller
@Controller
public class loginCntlr {
@RequestMapping("/login")
public String home() {
System.out.println("INSIDE HOME");
return "login";
}
@RequestMapping(value = "/hello", method=RequestMethod.POST,headers="application/json")
public @ResponseBody Object helloTest(HttpServletRequest request,HttpServletResponse res){
System.out.print("ok im here: "+request.getParameter("branchType"));
HashMap<String, String> map = new HashMap<String, String>();
map.put("value1", "sanjana");
map.put("value2", "shikha");
System.out.println("ok im here: "+map.get("value1"));
return map;
}
}
package com.mylogistics.controller
@控制器
公共类登录NTLR{
@请求映射(“/login”)
公共字符串home(){
System.out.println(“内部主页”);
返回“登录”;
}
@RequestMapping(value=“/hello”,method=RequestMethod.POST,headers=“application/json”)
public@ResponseBody对象helloTest(HttpServletRequest请求,HttpServletResponse res){
System.out.print(“ok im here:+request.getParameter(“branchType”));
HashMap=newHashMap();
地图出售(“value1”、“sanjana”);
地图出售(“价值2”、“什刹”);
System.out.println(“ok im here:+map.get(“value1”);
返回图;
}
}
我解决了要编辑的问题
<mvc:annotation-driven/>
添加为
<mvc:annotation-driven>
<mvc:message-converters>
<bean class="org.springframework.http.converter.StringHttpMessageConverter" />
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
</mvc:message-converters>
</mvc:annotation-driven>
因为根据所有Jackson 1.*已被删除,您正在使用它
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.12</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.13</version>
</dependency>
org.codehaus.jackson
您能找到解决方案吗?我也有类似的问题。
<mvc:annotation-driven/>
<mvc:annotation-driven>
<mvc:message-converters>
<bean class="org.springframework.http.converter.StringHttpMessageConverter" />
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
</mvc:message-converters>
</mvc:annotation-driven>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.12</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.13</version>
</dependency>