如何解决关于使用jsp
我是Java和Spring Boot的新手。现在，我正在使用Spring Boot，安全性和MVC基于视频进行项目。我正在使用MysqL DB。通过跟踪该视频，我已经成功地使用邮递员完成了该任务。我想使用jsp文件执行该项目。但是我不知道该怎么做。我遇到了500个错误（异常处理模板“索引”：错误解析模板[index]，模板可能不存在，或者任何配置的模板解析器都无法访问该模板）。有人可以给我任何解决方案！
@RestController
@RequestMapping("/api/auth")
@AllArgsConstructor
public class AuthController {
private final AuthService authService;
private final RefreshTokenService refreshTokenService;
@RequestMapping(value="/")
public String index(Model model) throws IOException{
System.out.println("Spring Reddit Clone");
String message="Welcome To Spring Reddit Clone!!!!!!";
System.out.println(message);
model.addAttribute("welcomeMessage",message);
return "index";
}
/*
@RequestMapping(value="/",method=RequestMethod.GET)
public String index(ModelMap m){
System.out.println("Spring Reddit Clone");
String message="Welcome To Spring Reddit Clone!!!!!!";
System.out.println(message);
m.addAttribute("welcomeMessage",message);
return "index";
}*/
@PostMapping("/signup")
public String signup(@RequestBody RegisterRequest registerRequest) {
authService.signup(registerRequest);
return "index.jsp";
}
@PostMapping("/login")
public AuthenticationResponse login(@RequestBody LoginRequest loginRequest){
return authService.login(loginRequest);
}
@GetMapping("accountVerification/{token}")
public ResponseEntity<String> verifyAccount(@PathVariable String token) {
authService.verifyAccount(token);
return new ResponseEntity<>("Account Activated Successfully",OK);
}
@PostMapping("refresh/token")
public AuthenticationResponse refreshToken(@Valid @RequestBody RefreshTokenRequest
refreshTokenRequest){
return authService.refreshToken(refreshTokenRequest);
}
@PostMapping("/logout")
public ResponseEntity<String> logout(@Valid @RequestBody RefreshTokenRequest refreshTokenRequest){
refreshTokenService.deleteRefreshToken(refreshTokenRequest.getRefreshToken());
return ResponseEntity.status(OK).body("Refresh Token Deleted Successfully!!!!");
}
}
这是我的jsp ...
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<html xmlns:th="http://www.thymeleaf.org">
<head>
<Meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>SpringRedditClone!!!</title>
</head>
<body>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
${welcomeMessage}
<font face="verdana" size="2">
<h2>Spring Reddit Clone!!!!!</h2>
</font>
<div><a href="login.jsp">Login</a> </div>
<div><a href="signup.jsp">Signup</a></div>
</body>
</html>
但是我得到的是“索引”字符串而不是jsp中的链接。
这是我的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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<packaging>war</packaging>
<artifactId>reddit_clone</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>reddit_clone</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<org.mapstruct.version>1.3.1.Final</org.mapstruct.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>MysqL</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<!-- JWT related dependencies-->
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-api</artifactId>
<version>0.10.5</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-impl</artifactId>
<scope>runtime</scope>
<version>0.10.5</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-jackson</artifactId>
<scope>runtime</scope>
<version>0.10.5</version>
</dependency>
<!-- For displaying time as Relative Time Ago ("Posted 1 Day ago"),as this is a Kotlin library,we also need Kotlin runtime libraries-->
<dependency>
<groupId>com.github.marlonlom</groupId>
<artifactId>timeago</artifactId>
<version>4.0.1</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib-jdk8</artifactId>
<version>${kotlin.version}</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-test</artifactId>
<version>${kotlin.version}</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.persistence/javax.persistence-api -->
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>javax.persistence-api</artifactId>
<version>2.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct</artifactId>
<version>${org.mapstruct.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-jasper -->
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jasper</artifactId>
<version>9.0.37</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.3.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version> <!-- or newer version -->
<configuration>
<source>1.8</source> <!-- depending on your project -->
<target>1.8</target> <!-- depending on your project -->
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${org.mapstruct.version}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
<version>${kotlin.version}</version>
<executions>
<execution>
<id>compile</id>
<phase>process-sources</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<sourceDirs>
<source>src/main/java</source>
<source>target/generated-sources/annotations</source>
</sourceDirs>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
解决方法
您的“索引”方法看起来不错。
但是我认为您的问题来自使用@RestController而不是@Controller。
如果我正确记得spring-mvc的工作方式，则在@Controller中使用返回String的方法时，spring会查找一个视图，并将返回的String作为其ID。如果找到，它将转发到该视图。
但是，@RestController和/或ResponseEntity不会转发到视图。 它们返回一些序列化的数据，通常应该由当前页面对这些数据进行DOM操作。
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