Spring MVC 不会映射到我的控制器

Question

我正在尝试将项目从传统（工作）Java servlet 应用程序迁移到 NetBeans IDE 中的 Spring MVC，但我的程序绝对拒绝 ping 控制器.在客户端，我看到以下 404 错误：

index.do?displayType=table:1 加载资源失败：服务器响应状态为 404（未找到）

我这样调用控制器方法：

$.get("index.do","displayType=table", function( data ) {
    jstring = JSON.parse(data.substr(12).slice(0, -1));  

});

$.get("index.do","displayType=pivot",function(unparsedJSON) {});

$.post("index.do","jsonString=" + JSON.stringify(hot.getData()));

下面是我的控制器和 xml 配置文件：

MappingControl.java

package controllers;

import infoLoader.JsonWriter;
import infoLoader.getJSON;
import java.util.logging.Level;
import java.util.logging.Logger;
import static org.springframework.http.HttpMethod.GET;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;



@Controller
@RequestMapping("/")
public class MappingControl {

    @RequestMapping(value="/index.do", method=RequestMethod.GET)
    public String populatePivotAndSheet(@RequestParam("displayType") String type) {

        String returnedJSON = "";

        try {
             returnedJSON = getJSON.getJSON(type);
        } catch (Exception ex) {
            System.out.println("Unable to retrieve JSON");
        }

        return returnedJSON;

    }

    @RequestMapping(value="/index.do", method=RequestMethod.POST)
    public void deliverSheet(@RequestParam("jsonString") String writableJSON) {

        String returnedJSON = "";

        JsonWriter.writeJSON(writableJSON);

    }

}

applicationContext.xml

<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

</beans>

调度员-servlet.xml

<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd" xmlns:mvc="http://www.springframework.org/schema/mvc">

    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>

    <!--
    Most controllers will use the ControllerClassNameHandlerMapping above, but
    for the index controller we are using ParameterizableViewController, so we must
    define an explicit mapping for it.
    -->
    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="index.htm">indexController</prop>
            </props>
        </property>
    </bean>

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:prefix="/WEB-INF/jsp/"
          p:suffix=".jsp" />

    <!--
    The index controller.
    -->
    <bean name="indexController"
          class="org.springframework.web.servlet.mvc.ParameterizableViewController"
          p:viewName="index" />

    <mvc:resources mapping="/resources/**" location="/resources" />
    <context:component-scan base-package="controllers" />


</beans>

我一直在基于 NetBeans 提供的默认 Spring-MVC 模板构建此模板，因此如果您认为模板格式不正确并且应该以某种方式进行更改，我将不胜感激输入你可能有。

非常感谢你们的宝贵时间，伙计们，如果有任何不清楚的地方，请告诉我。

Answer 1

您需要将 @ResponseBody 添加到您的方法中，因为在您的情况下，您想要 return json 数据，如果您缺少 @ResponseBody 它将 return到查看页面，但是你没有在代码中指定任何查看页面，因此会导致404错误

@ResponseBody
@RequestMapping(value="/index.do", method=RequestMethod.GET)
public String populatePivotAndSheet(@RequestParam("displayType") String type) {

    String returnedJSON = "";

    try {
         returnedJSON = getJSON.getJSON(type);
    } catch (Exception ex) {
        System.out.println("Unable to retrieve JSON");
    }

    return returnedJSON;

}

@ResponseBody
@RequestMapping(value="/index.do", method=RequestMethod.POST)
public void deliverSheet(@RequestParam("jsonString") String writableJSON) {

    String returnedJSON = "";

    JsonWriter.writeJSON(writableJSON);

}

Spring MVC 不会映射到我的控制器

Spring MVC Will Not Map to My Controller

java

rest

configuration

spring-mvc

spring-config