Whitelabel Error Page 404 spring boot初学 访问templates出错解决方法
05-09 2364
百度了一上午绝大部分答案都是*Application启动类应该在父级包如果这个项目的启动类的位置绝对没问题,但是还是报404!可以尝试如下方法将右侧依赖的包在左边依次找到然后全部删除左边的jar ,然... 来自: u013986038的博客
初次使用spring boot,按照其官网Building a RESTful Web Service搭建运行一个demo,代码如下:
pom.xml
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xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation=
"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0
modelVersion>
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<groupId>personal.timeless
groupId>
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<artifactId>CommentSystem
artifactId>
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<packaging>war
packaging>
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<version>0.0.1-SNAPSHOT
version>
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<name>CommentSystem Maven Webapp
name>
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<url>http://maven.apache.org
url>
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<parent>
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<groupId>org.springframework.boot
groupId>
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<artifactId>spring-boot-starter-parent
artifactId>
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<version>1.4.2.RELEASE
version>
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parent>
-
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot
groupId>
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<artifactId>spring-boot-starter-web
artifactId>
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dependency>
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<dependency>
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<groupId>org.springframework.boot
groupId>
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<artifactId>spring-boot-starter-test
artifactId>
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<scope>test
scope>
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dependency>
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<dependency>
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<groupId>com.jayway.jsonpath
groupId>
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<artifactId>json-path
artifactId>
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<scope>test
scope>
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dependency>
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dependencies>
-
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<properties>
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<java.version>1.8
java.version>
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properties>
-
-
-
<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot
groupId>
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<artifactId>spring-boot-maven-plugin
artifactId>
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plugin>
-
plugins>
-
build>
-
-
<repositories>
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<repository>
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<id>spring-releases
id>
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<url>https://repo.spring.io/libs-release
url>
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repository>
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repositories>
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<pluginRepositories>
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<pluginRepository>
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<id>spring-releases
id>
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<url>https://repo.spring.io/libs-release
url>
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pluginRepository>
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pluginRepositories>
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project>
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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@RestController
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public
class Comments {
-
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@RequestMapping(
"/greeting")
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public String greeting(@RequestParam(value="name", defaultValue="World") String name) {
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return name;
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}
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}
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public
class App
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{
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public static void main(String[] args) throws Exception {
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SpringApplication.run(App.class, args);
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}
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}
检查地址没问题,核对jar包也正确。google,有说少jar包,按照回答添加以后也无济于事。折腾了一会找到了原因
竟然时目录文件结构问题,最后附上官网说明http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-structuring-your-code
14.2 Locating the main application class We generally recommend that you locate your main application class in a root package above other classes. The @EnableAutoConfiguration annotation is often placed on your main class, and it implicitly defines a base “search package” for certain items. For example, if you are writing a JPA application, the package of the @EnableAutoConfiguration annotated class will be used to search for @Entity items. Using a root package also allows the @ComponentScan annotation to be used without needing to specify a basePackage attribute. You can also use the @SpringBootApplication annotation if your main class is in the root package. Here is a typical layout: com +- example +- myproject +- Application.java | +- domain | +- Customer.java | +- CustomerRepository.java | +- service | +- CustomerService.java | +- web +- CustomerController.java
05-09 2364
百度了一上午绝大部分答案都是*Application启动类应该在父级包如果这个项目的启动类的位置绝对没问题,但是还是报404!可以尝试如下方法将右侧依赖的包在左边依次找到然后全部删除左边的jar ,然... 来自: u013986038的博客
访问路劲
出错原因
代码块
代码功能
代码解释
实例如下
分析出错思路
解决方法
方法一添加代码 RequestMapping
方法二添加代码 Reques…
来自: expect521的博客