HTTP tomcat maven 上的 WAR 文件部署后状态 404，即使我的项目运行良好

Question

My spring-boot project is working fine when I "Run as Spring boot app", but when I "Maven install" it to WAR file, then deploy it to a tomcat server -> It always get 404 Error like "The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.". Even I access the correct URL as I accessed while run it with "Run as Spring boot app" option (With the WAR file name at first. Of course: Like: " http://localhost:7778/parsexml/getall "), It still 404 Error.

Here is my POM file

<?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>
    <packaging>war</packaging>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.0.BUILD-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.parsexml</groupId>
    <artifactId>parseXML</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>parseXML</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>11</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>6.0.17.Final</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.4.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.4.1.Final</version>
        </dependency>
        <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-web-services</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </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>
    </dependencies>

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

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </pluginRepository>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

</project>

my App class

package com.parsexml.vnexpress;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class ParseXmlInsertdb1Application extends SpringBootServletInitializer{
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(ParseXmlInsertdb1Application.class);
    }
    public static void main(String[] args) {
        SpringApplication.run(ParseXmlInsertdb1Application.class, args);
    }

}

and my Controller

package com.parsexml.vnexpress;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
@RestController
public class getData {
    private final Logger logger = LoggerFactory.getLogger(getData.class);
    @Autowired
    private newRes res;

    @RequestMapping("getall")
    public List<db_url> getAlldata() {
        List<db_url> u = new ArrayList<>();
        res.findAll().forEach(u::add);
        return u;
    }

    @RequestMapping("/view/{id}")
    public Optional<db_url> getbyID(@PathVariable Long id){
        return res.findById(id);
    }

    @RequestMapping(method=RequestMethod.PUT, value="/update/{id}")
    public void update(@RequestBody db_url detail, @PathVariable Long id) {
        res.save(detail);
    }

    @RequestMapping(method=RequestMethod.DELETE, value="/delete/{id}")
    public void delete(@PathVariable Long id) {
        res.deleteById(id);
    }
}

Answer 1

I guess your app is running properly when you run it on your IDE!

It's recommended to add <fileName> in your pom.xml file.

<build>
    <finalName>app-name</finalName>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

Now when you perform maven clean and maven package there will be a war file with the name you gave in the target directory.

You can move it to the webapp directory in your tomcat installation and start the server.

now when you are accessing the REST calls in your app, you have to call them as follows!

localhost:8088/app-name/first/get/call

you have to have the war file name ( app-name ) in your rest calls.

Hope this helps!

Good luck!!