Question

我正在学习Spring Boot并通过课程学习。请原谅我的新手。我已经搜索了这个错误，并尝试了我发现的建议，这对我没有用，所以我发布了这个问题。我希望有人可以帮助我。

目前这是一个非常简单的应用程序，我只是在使用http://localhost:8080/或http://localhost:8080/courses

时尝试调出courses.html

我有一个course.html文件，位于文件夹src / main / resources / templates

中

这是结果错误：

2018-06-04 15:51:59.928 ERROR 3156 --- [nio-8080-exec-5] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Circular view path [courses]: would dispatch back to the current handler URL [/courses] again. Check your ViewResolver setup! (Hint: This may be the result of an unspecified view, due to default view name generation.)] with root cause

我的控制器中有这个代码：

@Controller
public class CourseController {

    @RequestMapping(value="/")
    public String rootPath() {
        return "courses";
    }

    @RequestMapping(value="courses")
    public String courses (ModelMap model) {
        return "courses";
    }

}

这是我的POM文件：

<?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>net.proffesso.videos</groupId>
    <artifactId>CourseCreation</artifactId>
    <version>0.0.1</version>
    <packaging>jar</packaging>

    <name>CourseCreation</name>
    <description>CourseCreation project using Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.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-web</artifactId>
        </dependency>

        <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

我读到的一条建议是说要从

更改Spring Boot启动器依赖项

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
</dependency>

到

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

我的POM文件中生成了这两个依赖项，如果我删除了spring-boot-starter-web，那么我在@Controller和@RequestMapping上会出现错误

循环视图路径：将再次调度回当前处理程序URL。检查ViewResolver设置

0 个答案: