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我如何在Spring MVC中使用我的控制器？

[英]How can i use my Controller in spring mvc?

 原文  2018-10-25 07:52:06  6   3    java/ spring/ spring-mvc/ java-ee

问题描述

I have a problem with my Controller class: I create my project with maven and I add the dependencies for hibernate and Spring. 我的Controller类有问题：我使用maven创建项目，并添加了hibernate和Spring的依赖项。 When I start the app I can go in the first page from the servlet, but when I call any method I get 404. I try many solutions, but no one work, I use a web logic server, there is some particular configuration for this server? 启动应用程序时，我可以从servlet进入第一页，但是当我调用任何方法时，都会得到404。我尝试了许多解决方案，但是没有人使用，我使用Web逻辑服务器，对此有一些特殊的配置。服务器？ In the project this is my actual situation: 在项目中，这是我的实际情况：

AppController.java AppController.java 

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


        @RequestMapping(value = "/two", method = RequestMethod.GET)
        public String two() {
            System.out.println("work?");
            return "newFile";
        }

}

i try also with ModelAndView 我也尝试使用ModelAndView

registration.jsp registration.jsp 

<!DOCTYPE HTML>
<html>
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
      <title>Title</title>
      <style type="text/css">
         form {
         display: inline-block;
         }
      </style>
   </head>
   <body>
      <form action="/two" method="GET">
         <p class="message">//Not registered? 
            <input type="submit" value="Create an account">
         </p>
      </form>
   </body>
</html>

web.xml web.xml中 

  <!DOCTYPE web-app
   PUBLIC “-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN”
   “http://java.sun.com/dtd/Web-app_2_3.dtd”>
<web-app>
   <servlet>
      <servlet-name>LDSServlet</servlet-name>
      <servlet-class>com.reply.servlet.LDSServlet</servlet-class>
   </servlet>
   <servlet-mapping>
      <servlet-name>LDSServlet</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>
</web-app>

applicationContext.xml applicationContext.xml中 

<?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"
   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.xsd">
   <bean
      class="org.springframework.web.servlet.view.InternalResourceViewResolver">
      <property name="prefix">
         <value>/</value>
      </property>
      <property name="suffix">
         <value>.jsp</value>
      </property>
   </bean>
</beans>

AppConfig.java AppConfig.java 

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.reply.utility")
public class AppConfig {

    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setViewClass(JstlView.class);
        viewResolver.setPrefix("/WEB-INF/views/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }

    @Bean
    public MessageSource messageSource() {
        ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
        mesageSource.setBasename("messages");
        return messageSource;
    }
}

pom.xml 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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.reply</groupId>
  <artifactId>LDSSpring</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>LDSSpring</name>
  <url>http://maven.apache.org</url>



  <repositories>
        <repository>
            <id>JBoss repository</id>
            <url>http://repository.jboss.org/nexus/content/groups/public/</url>
        </repository>
    </repositories>


  <properties>
        <springframework.version>5.1.0.RELEASE</springframework.version>
        <hibernate.version>5.3.1.Final</hibernate.version>
        <oracle.connector.version>18.1.0.1</oracle.connector.version>
    </properties>

    <dependencies>
        <!-- Spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${springframework.version}</version>
        </dependency>

        <!-- Hibernate -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.version}</version>
        </dependency>



        <!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>2.0.1.Final</version>
        </dependency>


        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>${hibernate.version}</version>
        </dependency>









         <!-- https://mvnrepository.com/artifact/org.jboss/jandex -->
        <dependency>
            <groupId>org.jboss</groupId>
            <artifactId>jandex</artifactId>
            <version>2.0.5.Final</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
        </dependency>


        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>javax.servlet.jsp-api</artifactId>
            <version>2.3.3</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>



    </dependencies>
</project>

In the JSP and in the method I try to write the value for call method with / and without, but the result is the same. 在JSP和方法中，我尝试使用/和不使用/编写调用方法的值，但是结果是相同的。 Can someone help me? 有人能帮我吗？

3 个解决方案

解决方案1
 1  2018-10-25 08:24:15

If I understand the problem correctly, you having new controller component and request mapping which should be invoked on form submission. 如果我正确理解问题，则您有新的控制器组件和请求映射，应在表单提交时调用它。

I see the below issues in xml configuration 我在xml配置中看到以下问题

you are not using spring DispatcherServlet in web.xml . 您没有在web.xml中使用spring DispatcherServlet 。 This class is responsible for processing and handles the request and forwards to appropriate controller 此类负责处理和处理请求，并转发给适当的控制器

You are defining the mapping in web.xml with class com.reply.servlet.LDSServlet . 您正在使用com.reply.servlet.LDSServlet类在web.xml中定义映射。 how would the LDSServlet class look like? LDSServlet类的外观如何？

Basically DispatcherServlet , will process the configuration (Controller classes and request mappings) and uses this for picking the appropriate controller while request arrives. 基本上DispatcherServlet ，将处理配置（控制器类和请求映射），并在请求到达时使用它来选择适当的控制器。

EDIT: 编辑：

you should be including the context-path in the form action. 您应该在表单操作中包含context-path 。

解决方案2
 0  2018-10-25 08:21:34

try this way, it is work fine with me. 尝试这种方式，对我来说很好。 

@Controller
public class HelloController {

    @RequestMapping(value = { "/", "/welcome**" }, method = RequestMethod.GET)
    public ModelAndView welcomePage() {

        ModelAndView model = new ModelAndView();
        model.addObject("title", "Spring Security Hello World");
        model.addObject("message", "This is welcome page!");
        model.setViewName("hello");
        return model;

    }

解决方案3
 0 已采纳  2018-10-25 15:46:42

I resolve my problem, the process "oracle xe tns listener" use my port 8080, i suppose the server block the call on controller. 我解决了我的问题，进程“ oracle xe tns listener”使用我的端口8080，我想服务器阻塞了控制器上的调用。 I found this solution because i try to start my application on tomcat and i had the port busy, so I termitate the process and my application go on tomcat and web logic server :) 我找到了这个解决方案，因为我尝试在tomcat上启动我的应用程序，并且端口繁忙，因此我终止了该过程，并且我的应用程序在tomcat和Web逻辑服务器上进行了:)

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