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0

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

public class MyUtil {
    public static Map<Integer,String> getAccountMap(List<Account> accounts){
        Map<Integer,String> listMap=new HashMap<Integer, String>();
        for(Account accountx:accounts){
            listMap.put(accountx.getId(),accountx.getNickname());
        }
        return listMap;
    }

任务二的jsp与controller交互问题

2

1

json

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

程序跑出来的结果一直是404

1

jetty/tomcat SSM

class="cursor-pointer"> 详细描述

<?xml version="1.0" encoding="UTF-8"?>

<groupId>com.jnshu</groupId>
  <artifactId>SecondWeb</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

<name>SecondWeb Maven Webapp</name>
  
  <url>http://www.example.com</url>

<dependencies>
    
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

<dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.1.0.RELEASE</version>
    </dependency>

<dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.8.0-alpha0</version>
    </dependency>
    
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.8.0-alpha0</version>
    </dependency>
  </dependencies>

<build>
    <finalName>SecondWeb</finalName>
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

pom.xml文件

<!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 xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                      http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1"
         metadata-complete="true">
  <display-name>Archetype Created Web Application</display-name>

<servlet>
    
    <servlet-name>springmvc</servlet-name>
    
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:ApplicationContext.xml</param-value>
    </init-param>
    
    
    <load-on-startup>1</load-on-startup>
  </servlet>
  
  
  <servlet-mapping>
    
    <servlet-name>springmvc</servlet-name>
    
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

web.xml文件

<?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:context="http://www.springframework.org/schema/context"
	   xmlns:mvc="http://www.springframework.org/schema/mvc"
	   xsi:schemaLocation="http://www.springframework.org/schema/beans
	   http://www.springframework.org/schema/beans/spring-beans.xsd
	   http://www.springframework.org/schema/context
	   http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

<mvc:annotation-driven/>

<context:component-scan base-package="com.jnshu.controller" use-default-filters="false">
		
		<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
	</context:component-scan>

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
		
		<property name="prefix" value="/webapp/index/"/>
		
		<property name="suffix" value=".jsp"/>
	</bean>
</beans>

ApplicationContext.xml文件

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

        //设置视图对象的名称
        mv.setViewName("welcome");
        return mv;

DEBUG [http-nio-8080-exec-1] - GET "/SecondWeb_war/index/toWelcome", parameters={}
DEBUG [http-nio-8080-exec-1] - Mapped to public org.springframework.web.servlet.ModelAndView com.jnshu.controller.ControllerTest.toWelcome(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
DEBUG [http-nio-8080-exec-1] - View name 'welcome', model {message=Hello,Welcome to SpringMVC!}
DEBUG [http-nio-8080-exec-1] - Forwarding to [/webapp/index/welcome.jsp]
DEBUG [http-nio-8080-exec-1] - Completed 404 NOT_FOUND
DEBUG [http-nio-8080-exec-3] - GET "/SecondWeb_war/index/toWelcome", parameters={}
DEBUG [http-nio-8080-exec-3] - Mapped to public org.springframework.web.servlet.ModelAndView com.jnshu.controller.ControllerTest.toWelcome(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
DEBUG [http-nio-8080-exec-3] - View name 'welcome', model {message=Hello,Welcome to SpringMVC!}
DEBUG [http-nio-8080-exec-3] - Forwarding to [/webapp/index/welcome.jsp]
DEBUG [http-nio-8080-exec-3] - Completed 404 NOT_FOUND

tomcat配置虚拟目录问题

0

1

jetty/tomcat

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图