玩转spring boot——war部署

前言

之前部署spring boot应用是通过直接输入命令“java -jar”来实现的。而有些情况，由于部署环境的制约，只能把项目从jar转换成war才能部署，如新浪云sae的java环境容器。那怎样转换成war项目呢？其实非常简单，只需要App类继承SpringBootServletInitializer，并重写“protected SpringApplicationBuilder configure(SpringApplicationBuilder builder)” 方法即可

package com.github.carter659.spring10;

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

/**
 * 博客出处：http://www.cnblogs.com/GoodHelper/
 * 
 * @author 刘冬
 *
 */
@SpringBootApplication
public class App extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication.run(App.class, args);
    }

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        // TODO Auto-generated method stub
        // return super.configure(builder);
        return builder.sources(App.class);
    }
}

修改pom.xml，把<packaging>jar</packaging>修改为<packaging>war</packaging>

并增加如下maven依赖：

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

因为spring boot默认会嵌入tomcat。

完整的pom.xml为：

<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>com.github.carter659</groupId>
    <artifactId>spring10</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.RELEASE</version>
    </parent>

    <name>spring10</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</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-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <finalName>spring10</finalName>
    </build>
</project>

pom.xml

其他代码，“MainController.java”和“index.html”：

package com.github.carter659.spring10;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

/**
 * 博客出处：http://www.cnblogs.com/GoodHelper/
 * 
 * @author 刘冬
 *
 */
@Controller
public class MainController {

    @GetMapping("/")
    public String index() {
        return "index";
    }
}

MainController

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<title>玩转spring boot——war部署</title>
</head>
<body>
    <h1>玩转spring boot——war部署</h1>
    <h4>
        <a href="http://www.cnblogs.com/GoodHelper/">from 刘冬的博客
            http://www.cnblogs.com/GoodHelper/</a>
    </h4>
    <br /> 你好，war
    <br />
    <a href="http://www.cnblogs.com/GoodHelper/">点击访问原版博客</a>
</body>
</html>