spring无法在vscode中创建JSP文件

Question

我的IDE是VSCODE

tomcat服务器连接正常但是控制器不工作输入"http://localhost:8080/sp5-chap09/hello?name=abc"出现404错误;控制器的println不起作用，因此控制台看不到log

当我访问"http://localhost:8080/sp5-chap09/src/main/webapp/WEB-INF/view/hello.jsp"时，jsp文件显示在浏览器中，没有404错误发生，但是不能导入参数

---

工作区树:

SP5-CHAP09
|   pom.xml
|
+---src
|   ---main
|       +---java
|       |   +---chap09
|       |   |       HelloController.java
|       |   |
|       |   ---config
|       |           ControllerConfig.java
|       |           MvcConfig.java
|       |
|       +---resources
|       ---webapp
|           ---WEB-INF
|               |   web.xml
|               |
|               ---view
|                       hello.jsp
|
---target
+---classes
|   +---chap09
|   |       HelloController.class
|   |
|   ---config
|           ControllerConfig.class
|           MvcConfig.class
|
+---generated-sources
|   ---annotations
+---maven-archiver
|       pom.properties
|
+---maven-status
|   ---maven-compiler-plugin
|       ---compile
|           ---default-compile
|                   createdFiles.lst
|                   inputFiles.lst
|
---test-classes

---

控制器:

package chap09;
import java.time.LocalDateTime;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
@Controller
public class HelloController {
@GetMapping("/hello")
public String hello(Model model,
@RequestParam(value="name", required=false) String name){
model.addAttribute("greeting", "Hello, " + name);
System.out.println("hello() method execute: " + LocalDateTime.now());
return "hello";
}
}

---

配置文件:

package config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import chap09.HelloController;
@Configuration
public class ControllerConfig {
@Bean
public HelloController helloController(){
return new HelloController();
}
}

package config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
@EnableWebMvc
public class MvcConfig implements WebMvcConfigurer{
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer){
configurer.enable();
}
@Override
public void configureViewResolvers(ViewResolverRegistry registry){
registry.jsp("/WEB-INF/view/", ".jsp");
}
}

---

pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<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>sp5</groupId>
<artifactId>sp5-chap09</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.2-b02</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-webmvc</artifactId>
<version>5.2.2.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>utf-8</encoding>
</configuration>
</plugin>
</plugins>
</build>
</project>

---

web . xml:

<?xml version="1.0" encoding="UTF-8"?>
<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">
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextClass</param-name>
<param-value>
org.springframework.web.context.support.AnnotationConfigWebApplicationContext
</param-value>
</init-param>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
config.MvcConfig
config.ControllerConfig
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

---

视图文件:

<%@ page contentType="text/html; charset=utf-8" %>
<!DOCTYPE html>
<html>
<head>
<title>Hello</title>
</head>
<body>
greeting: ${greeting}
</body>
</html>

---

我搜索了，但是没有适合我的解决方案我猜不出来

Answer 1

我解决了。

1. 当你在maven上工作时，maven项目任务行在vscode的左下方创建。
2. 如果单击任务行，则工作空间中的maven项目将以列表形式出现。
3. 其中，右键单击要操作的目录，在出现的列表中选择"package"。
4. maven-war-plugin版本错误。
5. 在pom.xml中添加了maven-war-plugin 3.2.2。
6. 如果你再次选择'package'，在目标文件夹中创建一个war文件。
7. 添加在tomcat服务器中创建的war文件。
如果你在浏览器中显示，maven项目可以正常工作。
8. 你必须点击'package'每次编辑代码。