编译后的Spring Boot+React项目无法找到React构建文件求助
Spring Boot + React WAR包部署Apache后的路由与API访问问题
我完成了一个原型项目开发,几天后要做用户测试,IDE里运行完全正常。后端是STS4构建的Spring Boot,前端是VS Code构建的React。
作为部署流程的一部分,我把两部分打包成WAR包准备部署到测试服务器。编译没问题,WAR包也部署到Apache服务器(我先在这里测试),但问题来了。
2023年3月8日更新
感谢@DhavalGhajar的帮助,问题有了进展。编译完成后,把后缀为**.original**的文件重命名,去掉这个后缀只保留war后缀。接着用7zip打开项目包,找到React项目的index.html文件,移除static路径前的斜杠,修改CSS和JS的引用路径:
<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,initial-scale=1"> <link rel="shortcut icon" href="/favicon.ico"> <title>React App</title> <link href="static/css/main.9a0fe4f1.css" rel="stylesheet"> </head> <body> <div id="root"></div> <script type="text/javascript" src="static/js/main.f55352b1.js"></script> </body> </html>

我还修改了控制器代码,让它返回一个笑话:
import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class DadJokesController { @GetMapping("/api/dadjokes") public String dadJokes() { return "Justice is a dish best served cold, if it were served warm it would be just water."; } }
现在程序能显示首页,但找不到API端点:
问题还是和路由有关,程序实际请求的路径是:
但直接调用API是有效的:
React项目的package.json里有个生产构建不需要的代理配置,我已经移除了。目前进展如上,再次感谢@DhavalGajjar的帮助。
2023年3月7日更新
我参考的示例代码也出现了同样的问题。
并行排查项目的问题
我创建了一个更简单的并行项目来排查错误,但还是没解决。项目编译成WAR包部署到Apache:
运行项目后出现如下输出:
多次刷新后出现另一个错误:
错误详情:
控制器文件内容
package com.example.demo.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.CrossOrigin; import org.springframework.web.bind.annotation.GetMapping; @CrossOrigin @Controller public class ClientForwardController { @GetMapping(value = "/**/{path:[^\\.]*}") public String forward() { return "forward:/"; } }
项目结构

主类代码
package com.example.demo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class Backend6Application { public static void main(String[] args) { SpringApplication.run(Backend6Application.class, args); } }
Servlet初始化器(Spring Boot默认生成,也可与主类合并)
package com.example.demo; import org.springframework.boot.builder.SpringApplicationBuilder; import org.springframework.boot.web.servlet.support.SpringBootServletInitializer; public class ServletInitializer extends SpringBootServletInitializer { @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder application) { return application.sources(Backend6Application.class); } }
application.properties文件内容
spring.mvc.pathmatch.matching-strategy=ANT_PATH_MATCHER
POM文件内容
使用Maven frontend plugin集成并构建Spring Boot项目中的前端组件。已添加Tomcat依赖并设置为provided,因为要部署到Apache,但本地IDE的Tomcat上运行正常。
<?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>2.6.7</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.wazooinc</groupId> <artifactId>spring-boot-with-react</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>backend-6</name> <description>Demo project for Spring Boot with React</description> <properties> <java.version>11</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>com.github.eirslett</groupId> <artifactId>frontend-maven-plugin</artifactId> <version>1.12.1</version> <executions> <!-- installing node and npm --> <execution> <id>Install node and npm</id> <goals> <goal>install-node-and-npm</goal> </goals> <phase>generate-resources</phase> <configuration> <nodeVersion>v19.6.1</nodeVersion> <npmVersion>9.4.0</npmVersion> </configuration> </execution> <!-- running npm install --> <execution> <id>npm install</id> <goals> <goal>npm</goal> </goals> <phase>generate-resources</phase> <configuration> <arguments>install</arguments> </configuration> </execution> <!-- build our production version --> <execution> <id>npm build</id> <goals> <goal>npm</goal> </goals> <phase>generate-resources</phase> <configuration> <arguments>run build</arguments> </configuration> </execution> </executions> <configuration> <nodeVersion>v19.6.1</nodeVersion> <workingDirectory>${project.basedir}/src/main/frontend</workingDirectory> </configuration> </plugin> <!-- copy our react build artifacts to spring boot --> <plugin> <!-- <groupId>org.apache.maven.plugins</groupId> --> <artifactId>maven-resources-plugin</artifactId> <executions> <execution> <id>Copy JavaScript app into SpringBoot</id> <phase>process-resources</phase> <goals> <goal>copy-resources</goal> </goals> <configuration> <outputDirectory>${basedir}/target/classes</outputDirectory> <resources> <resource> <directory>${basedir}/src/main/frontend/build</directory> <filtering>false</filtering> </resource> </resources> </configuration> </execution> </executions> </plugin> </plugins> </build> </project>
已尝试的解决方案
- 查阅大量博客、问答和视频,未能定位问题
- 调整输出目录,似乎Spring Boot有固定的前端资源服务路径,与POM配置无关
- 修改asset-manifest.json文件,在构建文件路径中添加编译后的文件名,无效
- 执行
npm run build后将build文件夹复制到static文件夹,采用示例中的target文件夹存储编译后的前端文件 - 将React构建生成的js和css文件夹复制到resources/static文件夹,导致js/css文件404错误
- 考虑过在static文件夹创建index.html作为React应用入口App.js的代理,但觉得不合理,希望了解这种方法的原理
实在没有其他思路解决这个问题,求帮助!
内容的提问来源于stack exchange,提问作者epicUsername
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