Spring 调用尝试浏览到休息控制器时启动 404
Spring Boot 404 when calling trying to browse to rest controller
我在这里看到过很多类似的问题，但其中 none 似乎是我的解决方案。我的包结构似乎是正确的，即使不正确，在应用程序 class 中显式声明包或 @RestController class 仍然会导致 404。我注意到一件事不同关于我的问题，与我见过的大多数其他人相比，我收到的是 HTML 404 响应，而我见过的大多数其他人收到的是 JSON 404 响应。我没有部署这个应用程序，只是 运行 mvn spring-boot:run.
这是我的代码：
package com.billbuddy;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class BillbuddyApplication {
public static void main(String[] args) {
SpringApplication.run(BillbuddyApplication.class, args);
}
}
添加注释 @ComponentScan(@ComponentScan(basePackageClasses = UserController.class) 仍然会导致 404
这是我的休息控制器class
package com.billbuddy.controllers;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/user")
public class UserController {
@RequestMapping("/login")
public String login() {
return "Hello, World";
}
}
如您所见，我的 Rest 控制器位于 Spring 应用程序 class 的嵌套 class 中。文件夹结构相同
- src/main/java
- com/billbuddy
- BillbuddyApplication.java
- controllers
- UserController.java
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 http://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>2.1.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.testprojects</groupId>
<artifactId>billbuddy</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>billbuddy</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-couchbase</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</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>
这是当 运行 命令（我的 CouchBase 主机的外部 IP [连接已初始化但我的 spring-boot 应用程序尚未使用] 已被审查并出现如 XXX.XXX.XXX.XXX）。
2018-12-22 06:11:42.603 INFO 56870 --- [ main] com.billbuddy.BillbuddyApplication : Starting BillbuddyApplication on charlies-mbp.lan with PID 56870 (/Users/user1/Projects/Github/angular-example/Server/target/classes started by user1 in /Users/user1/Projects/Github/angular-example/Server)
2018-12-22 06:11:42.608 INFO 56870 --- [ main] com.billbuddy.BillbuddyApplication : No active profile set, falling back to default profiles: default
2018-12-22 06:11:43.737 INFO 56870 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2018-12-22 06:11:43.921 INFO 56870 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 172ms. Found 1 repository interfaces.
2018-12-22 06:11:44.702 INFO 56870 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-12-22 06:11:44.736 INFO 56870 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-12-22 06:11:44.736 INFO 56870 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/9.0.13
2018-12-22 06:11:44.749 INFO 56870 --- [ main] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/Users/user1/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.]
2018-12-22 06:11:44.840 INFO 56870 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-12-22 06:11:44.840 INFO 56870 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2130 ms
2018-12-22 06:11:45.345 INFO 56870 --- [ main] com.couchbase.client.core.CouchbaseCore : CouchbaseEnvironment: {sslEnabled=false, sslKeystoreFile='null', sslTruststoreFile='null', sslKeystorePassword=false, sslTruststorePassword=false, sslKeystore=null, sslTruststore=null, bootstrapHttpEnabled=true, bootstrapCarrierEnabled=true, bootstrapHttpDirectPort=8091, bootstrapHttpSslPort=18091, bootstrapCarrierDirectPort=11210, bootstrapCarrierSslPort=11207, ioPoolSize=4, computationPoolSize=4, responseBufferSize=16384, requestBufferSize=16384, kvServiceEndpoints=1, viewServiceEndpoints=12, queryServiceEndpoints=12, searchServiceEndpoints=12, configPollInterval=2500, configPollFloorInterval=50, networkResolution=NetworkResolution{name='auto'}, ioPool=NioEventLoopGroup, kvIoPool=null, viewIoPool=null, searchIoPool=null, queryIoPool=null, analyticsIoPool=null, coreScheduler=CoreScheduler, memcachedHashingStrategy=DefaultMemcachedHashingStrategy, eventBus=DefaultEventBus, packageNameAndVersion=couchbase-java-client/2.7.1 (git: 2.7.1, core: 1.7.1), retryStrategy=BestEffort, maxRequestLifetime=75000, retryDelay=ExponentialDelay{growBy 1.0 MICROSECONDS, powers of 2; lower=100, upper=100000}, reconnectDelay=ExponentialDelay{growBy 1.0 MILLISECONDS, powers of 2; lower=32, upper=4096}, observeIntervalDelay=ExponentialDelay{growBy 1.0 MICROSECONDS, powers of 2; lower=10, upper=100000}, keepAliveInterval=30000, continuousKeepAliveEnabled=true, keepAliveErrorThreshold=4, keepAliveTimeout=2500, autoreleaseAfter=2000, bufferPoolingEnabled=true, tcpNodelayEnabled=true, mutationTokensEnabled=false, socketConnectTimeout=1000, callbacksOnIoPool=false, disconnectTimeout=25000, requestBufferWaitStrategy=com.couchbase.client.core.env.DefaultCoreEnvironment@5d52e3ef, certAuthEnabled=false, coreSendHook=null, forceSaslPlain=false, compressionMinRatio=0.83, compressionMinSize=32, compressionEnabled=true, operationTracingEnabled=true, operationTracingServerDurationEnabled=true, tracer=ThresholdLogTracer, orphanResponseReportingEnabled=true, orphanResponseReporter=DefaultOrphanResponseReporter, keyValueServiceConfig=KeyValueServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=true, idleTime=0}, queryServiceConfig=QueryServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=false, idleTime=300}, searchServiceConfig=SearchServiceConfig{minEndpoints=0, maxEndpoints=12, pipelined=false, idleTime=300}, viewServiceConfig=ViewServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=false, idleTime=300}, analyticsServiceConfig=AnalyticsServiceConfig{minEndpoints=0, maxEndpoints=12, pipelined=false, idleTime=300}, queryTimeout=7500, viewTimeout=7500, searchTimeout=75000, analyticsTimeout=75000, kvTimeout=2500, connectTimeout=5000, dnsSrvEnabled=false, propagateParentSpan=true}
2018-12-22 06:11:46.672 INFO 56870 --- [ cb-io-1-1] com.couchbase.client.core.node.Node : Connected to Node XXX.XXX.XXX.XXX/XXX.XXX.XXX.XXX
2018-12-22 06:11:46.796 INFO 56870 --- [-computations-4] c.c.c.core.config.ConfigurationProvider : Selected network configuration: default
2018-12-22 06:11:46.810 INFO 56870 --- [-computations-4] c.c.c.core.config.ConfigurationProvider : Opened bucket BillBuddy
2018-12-22 06:11:47.394 INFO 56870 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2018-12-22 06:11:47.398 INFO 56870 --- [ main] com.billbuddy.BillbuddyApplication : Started BillbuddyApplication in 5.436 seconds (JVM running for 6.733)
2018-12-22 06:12:25.329 WARN 56870 --- [ cb-orphan-1] c.c.c.c.t.DefaultOrphanResponseReporter : Orphan responses observed: [{"top":[{"r":"XXX.XXX.XXX.XXX:8092","s":"view","c":"09F46A832158B8F9/0000000037386FDF","l":"192.168.86.142:62096"}],"service":"view","count":1}]
我正在通过浏览 chrome 中的 http://localhost:8080/user/login 来测试 @RestController 并看到以下屏幕：
https://imgur.com/a/42U3eZR
运行
curl http://localhost:8080/user/login
Returns
<!doctype html><html lang="en"><head><title>HTTP Status 404 – Not Found</title><style type="text/css">h1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} h2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} h3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} body {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} b {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} p {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;} a {color:black;} a.name {color:black;} .line {height:1px;background-color:#525D76;border:none;}</style></head><body><h1>HTTP Status 404 – Not Found</h1></body></html>
我确定我正在做的事情会很愚蠢，但我已经尝试了几十个我在堆栈溢出和其他网站上看到的其他答案，但都无济于事。请帮助我。
在我的电脑上用一个项目进行了快速测试...你应该在你的 pom 中有这个依赖项：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
让我知道它是否有效。
我在这里看到过很多类似的问题，但其中 none 似乎是我的解决方案。我的包结构似乎是正确的，即使不正确，在应用程序 class 中显式声明包或 @RestController class 仍然会导致 404。我注意到一件事不同关于我的问题，与我见过的大多数其他人相比，我收到的是 HTML 404 响应，而我见过的大多数其他人收到的是 JSON 404 响应。我没有部署这个应用程序，只是 运行 mvn spring-boot:run.
这是我的代码：
package com.billbuddy;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class BillbuddyApplication {
public static void main(String[] args) {
SpringApplication.run(BillbuddyApplication.class, args);
}
}
添加注释 @ComponentScan(@ComponentScan(basePackageClasses = UserController.class) 仍然会导致 404
这是我的休息控制器class
package com.billbuddy.controllers;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/user")
public class UserController {
@RequestMapping("/login")
public String login() {
return "Hello, World";
}
}
如您所见，我的 Rest 控制器位于 Spring 应用程序 class 的嵌套 class 中。文件夹结构相同
- src/main/java
- com/billbuddy
- BillbuddyApplication.java
- controllers
- UserController.java
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 http://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>2.1.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.testprojects</groupId>
<artifactId>billbuddy</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>billbuddy</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-couchbase</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</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>
这是当 运行 命令（我的 CouchBase 主机的外部 IP [连接已初始化但我的 spring-boot 应用程序尚未使用] 已被审查并出现如 XXX.XXX.XXX.XXX）。
2018-12-22 06:11:42.603 INFO 56870 --- [ main] com.billbuddy.BillbuddyApplication : Starting BillbuddyApplication on charlies-mbp.lan with PID 56870 (/Users/user1/Projects/Github/angular-example/Server/target/classes started by user1 in /Users/user1/Projects/Github/angular-example/Server)
2018-12-22 06:11:42.608 INFO 56870 --- [ main] com.billbuddy.BillbuddyApplication : No active profile set, falling back to default profiles: default
2018-12-22 06:11:43.737 INFO 56870 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2018-12-22 06:11:43.921 INFO 56870 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 172ms. Found 1 repository interfaces.
2018-12-22 06:11:44.702 INFO 56870 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-12-22 06:11:44.736 INFO 56870 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-12-22 06:11:44.736 INFO 56870 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/9.0.13
2018-12-22 06:11:44.749 INFO 56870 --- [ main] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/Users/user1/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.]
2018-12-22 06:11:44.840 INFO 56870 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-12-22 06:11:44.840 INFO 56870 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2130 ms
2018-12-22 06:11:45.345 INFO 56870 --- [ main] com.couchbase.client.core.CouchbaseCore : CouchbaseEnvironment: {sslEnabled=false, sslKeystoreFile='null', sslTruststoreFile='null', sslKeystorePassword=false, sslTruststorePassword=false, sslKeystore=null, sslTruststore=null, bootstrapHttpEnabled=true, bootstrapCarrierEnabled=true, bootstrapHttpDirectPort=8091, bootstrapHttpSslPort=18091, bootstrapCarrierDirectPort=11210, bootstrapCarrierSslPort=11207, ioPoolSize=4, computationPoolSize=4, responseBufferSize=16384, requestBufferSize=16384, kvServiceEndpoints=1, viewServiceEndpoints=12, queryServiceEndpoints=12, searchServiceEndpoints=12, configPollInterval=2500, configPollFloorInterval=50, networkResolution=NetworkResolution{name='auto'}, ioPool=NioEventLoopGroup, kvIoPool=null, viewIoPool=null, searchIoPool=null, queryIoPool=null, analyticsIoPool=null, coreScheduler=CoreScheduler, memcachedHashingStrategy=DefaultMemcachedHashingStrategy, eventBus=DefaultEventBus, packageNameAndVersion=couchbase-java-client/2.7.1 (git: 2.7.1, core: 1.7.1), retryStrategy=BestEffort, maxRequestLifetime=75000, retryDelay=ExponentialDelay{growBy 1.0 MICROSECONDS, powers of 2; lower=100, upper=100000}, reconnectDelay=ExponentialDelay{growBy 1.0 MILLISECONDS, powers of 2; lower=32, upper=4096}, observeIntervalDelay=ExponentialDelay{growBy 1.0 MICROSECONDS, powers of 2; lower=10, upper=100000}, keepAliveInterval=30000, continuousKeepAliveEnabled=true, keepAliveErrorThreshold=4, keepAliveTimeout=2500, autoreleaseAfter=2000, bufferPoolingEnabled=true, tcpNodelayEnabled=true, mutationTokensEnabled=false, socketConnectTimeout=1000, callbacksOnIoPool=false, disconnectTimeout=25000, requestBufferWaitStrategy=com.couchbase.client.core.env.DefaultCoreEnvironment@5d52e3ef, certAuthEnabled=false, coreSendHook=null, forceSaslPlain=false, compressionMinRatio=0.83, compressionMinSize=32, compressionEnabled=true, operationTracingEnabled=true, operationTracingServerDurationEnabled=true, tracer=ThresholdLogTracer, orphanResponseReportingEnabled=true, orphanResponseReporter=DefaultOrphanResponseReporter, keyValueServiceConfig=KeyValueServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=true, idleTime=0}, queryServiceConfig=QueryServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=false, idleTime=300}, searchServiceConfig=SearchServiceConfig{minEndpoints=0, maxEndpoints=12, pipelined=false, idleTime=300}, viewServiceConfig=ViewServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=false, idleTime=300}, analyticsServiceConfig=AnalyticsServiceConfig{minEndpoints=0, maxEndpoints=12, pipelined=false, idleTime=300}, queryTimeout=7500, viewTimeout=7500, searchTimeout=75000, analyticsTimeout=75000, kvTimeout=2500, connectTimeout=5000, dnsSrvEnabled=false, propagateParentSpan=true}
2018-12-22 06:11:46.672 INFO 56870 --- [ cb-io-1-1] com.couchbase.client.core.node.Node : Connected to Node XXX.XXX.XXX.XXX/XXX.XXX.XXX.XXX
2018-12-22 06:11:46.796 INFO 56870 --- [-computations-4] c.c.c.core.config.ConfigurationProvider : Selected network configuration: default
2018-12-22 06:11:46.810 INFO 56870 --- [-computations-4] c.c.c.core.config.ConfigurationProvider : Opened bucket BillBuddy
2018-12-22 06:11:47.394 INFO 56870 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2018-12-22 06:11:47.398 INFO 56870 --- [ main] com.billbuddy.BillbuddyApplication : Started BillbuddyApplication in 5.436 seconds (JVM running for 6.733)
2018-12-22 06:12:25.329 WARN 56870 --- [ cb-orphan-1] c.c.c.c.t.DefaultOrphanResponseReporter : Orphan responses observed: [{"top":[{"r":"XXX.XXX.XXX.XXX:8092","s":"view","c":"09F46A832158B8F9/0000000037386FDF","l":"192.168.86.142:62096"}],"service":"view","count":1}]
我正在通过浏览 chrome 中的 http://localhost:8080/user/login 来测试 @RestController 并看到以下屏幕：
https://imgur.com/a/42U3eZR
运行
curl http://localhost:8080/user/login
Returns
<!doctype html><html lang="en"><head><title>HTTP Status 404 – Not Found</title><style type="text/css">h1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} h2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} h3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} body {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} b {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} p {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;} a {color:black;} a.name {color:black;} .line {height:1px;background-color:#525D76;border:none;}</style></head><body><h1>HTTP Status 404 – Not Found</h1></body></html>
我确定我正在做的事情会很愚蠢，但我已经尝试了几十个我在堆栈溢出和其他网站上看到的其他答案，但都无济于事。请帮助我。
在我的电脑上用一个项目进行了快速测试...你应该在你的 pom 中有这个依赖项：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
让我知道它是否有效。