Java jQuery，Spring MVC @RequestBody和JSON-使之协同工作

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如何解决Java jQuery，Spring MVC @requestBody和JSON-使之协同工作？

我很确定你只需要注册 @H_574_3@mapPingJacksonhttpmessageConverter

（最简单的方法是通过<mvc:Annotation-driven />XML或@EnableWebMvcJava来实现）

这是一个工作示例：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLscheR_371_11845@a-instance"
    xsi:scheR_371_11845@aLOCATIOn="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion><groupID>test</groupID><artifactID>Json</artifactID><packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version><name>Json test</name>
    <dependencIEs>
        <dependency><!-- spring mvc -->
            <groupID>org.springframework</groupID><artifactID>spring-webmvc</artifactID><version>3.0.5.RELEASE</version>
        </dependency>
        <dependency><!-- jackson -->
            <groupID>org.codehaus.jackson</groupID><artifactID>jackson-mapper-asl</artifactID><version>1.4.2</version>
        </dependency>
    </dependencIEs>
    <build><plugins>
            <!-- javac --><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>
            <!-- jetty --><plugin><groupID>org.mortbay.jetty</groupID><artifactID>jetty-maven-plugin</artifactID>
            <version>7.4.0.v20110414</version></plugin>
    </plugins></build>
</project>

在文件夹src / main / webapp / WEB-INF中

web.xml

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLscheR_371_11845@a-instance"
    xsi:scheR_371_11845@aLOCATIOn="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version="2.4">
    <servlet><servlet-name>Json</servlet-name>
        <servlet-class>org.springframework.web.servlet.dispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Json</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
</web-app>

Json-servlet.xml

<beans xmlns="http://www.springframework.org/scheR_371_11845@a/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLscheR_371_11845@a-instance"
    xsi:scheR_371_11845@aLOCATIOn="http://www.springframework.org/scheR_371_11845@a/beans
                        http://www.springframework.org/scheR_371_11845@a/beans/spring-beans.xsd">

    <import resource="classpath:mvc-context.xml" />

</beans>

在文件夹src / main / resources中：

@H_574_3@mvc-context.xml

<beans xmlns="http://www.springframework.org/scheR_371_11845@a/beans"
    xmlns:mvc="http://www.springframework.org/scheR_371_11845@a/mvc" xmlns:xsi="http://www.w3.org/2001/XMLscheR_371_11845@a-instance"
    xmlns:context="http://www.springframework.org/scheR_371_11845@a/context"
    xsi:scheR_371_11845@aLOCATIOn="http://www.springframework.org/scheR_371_11845@a/mvc http://www.springframework.org/scheR_371_11845@a/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/scheR_371_11845@a/beans http://www.springframework.org/scheR_371_11845@a/beans/spring-beans-3.0.xsd
        http://www.springframework.org/scheR_371_11845@a/context http://www.springframework.org/scheR_371_11845@a/context/spring-context-3.0.xsd">

    <mvc:Annotation-driven />
    <context:component-scan base-package="test.Json" />
</beans>

在文件夹src / main / java / test / Json中

TESTController.java

@Controller
@requestMapPing("/test")
public class TESTController {

    @requestMapPing(method = requestMethod.POST, value = "math")
    @ResponseBody
    public Result math(@requestbody final request request) {
        final Result result = new Result();
        result.setAddition(request.getleft() + request.getright());
        result.setSubtraction(request.getleft() - request.getright());
        result.setMultiplication(request.getleft() * request.getright());
        return result;
    }

}

request.java

public class request implements serializable {
    private static final long serialVersionUID = 1513207428686438208L;
    privatE int left;
    privatE int right;
    public int getleft() {return left;}
    public voID setleft(int left) {this.left = left;}
    public int getright() {return right;}
    public voID setright(int right) {this.right = right;}
}

Result.java

public class Result implements serializable {
    private static final long serialVersionUID = -5054749880960511861L;
    private int addition;
    privatE int subtraction;
    privatE int multiplication;

    public int getAddition() { return addition; }
    public voID setAddition(int addition) { this.addition = addition; }
    public int getSubtraction() { return subtraction; }
    public voID setSubtraction(int subtraction) { this.subtraction = subtraction; }
    public int getMultiplication() { return multiplication; }
    public voID setMultiplication(int multiplication) { this.multiplication = multiplication; }
}

你可以通过mvn jetty:run在命令行上执行，然后发送POST请求来测试此设置：

URL:        http://localhost:8080/test/math
mime type:  application/Json
post body:  { "left": 13 , "right" : 7 }

我使用了海报firefox插件来执行此操作。

响应如下所示：

{"addition":20,"subtraction":6,"multiplication":91}

解决方法

@requestMapping(value={"/fooBar/{iD}"},method=requestMethod.GET)
     public @ResponseBody FooBar getFooBar(
            @PathVariable String id,httpServletResponse response,ModelMap model) {
        response.setContentType("application/json");
...
}

$.getJSON('fooBar/1',function(data) {
    //do something
});

@requestMapping(value={"/fooBar/save"},method=requestMethod.POST)
public String saveFooBar(@requestBody FooBar fooBar,ModelMap model) {

  //This method is never called. (it does when I remove the requestBody...)
}

<bean id="jsonhttpmessageConverter"
    class="org.springframework.http.converter.json.MappingJacksonhttpmessageConverter" />

<!-- Bind the return value of the Rest service to the ResponseBody. -->
<bean
    class="org.springframework.web.servlet.mvc.Annotation.AnnotationMethodHandlerAdapter">
    <property name="messageConverters">
        <util:list id="beanList">
            <ref bean="jsonhttpmessageConverter" />
<!--            <ref bean="xmlmessageConverter" /> -->              
        </util:list>
    </property>
</bean>

<bean id="jacksonmessageConverter"
    class="org.springframework.http.converter.json.MappingJacksonhttpmessageConverter"></bean>
    <bean
        class="org.springframework.web.servlet.mvc.Annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="jacksonmessageConverter" />
            </list>
        </property>
    </bean> 

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