intellij idea 中使用 gradle 创建 spring mvc 程序

摘要: 参考自网上几个例子整合而成

目录结构及源码：

目录结构

laolang@laolang-Lenovo-G470:~/code/idea/smvcthree$ tree
.
├── build.gradle
├── settings.gradle
├── smvcthree.iml
└── src
├── main
│   ├── java
│   │   └── com
│   │       └── mkyong
│   │           └── helloworld
│   │               ├── service
│   │               │   └── HelloWorldService.java
│   │               └── web
│   │                   └── WelcomeController.java
│   ├── resources
│   │   └── logback.xml
│   └── webapp
│       ├── resources
│       │   └── core
│       │       ├── css
│       │       │   ├── bootstrap.min.css
│       │       │   └── hello.css
│       │       ├── images
│       │       └── js
│       │           ├── bootstrap.min.js
│       │           └── hello.js
│       └── WEB-INF
│           ├── lib
│           │   ├── aopalliance-1.0.jar
│           │   ├── commons-logging-1.2.jar
│           │   ├── jstl-1.2.jar
│           │   ├── logback-classic-1.1.3.jar
│           │   ├── logback-core-1.1.3.jar
│           │   ├── slf4j-api-1.7.7.jar
│           │   ├── spring-aop-4.1.6.RELEASE.jar
│           │   ├── spring-beans-4.1.6.RELEASE.jar
│           │   ├── spring-context-4.1.6.RELEASE.jar
│           │   ├── spring-core-4.1.6.RELEASE.jar
│           │   ├── spring-expression-4.1.6.RELEASE.jar
│           │   ├── spring-web-4.1.6.RELEASE.jar
│           │   └── spring-webmvc-4.1.6.RELEASE.jar
│           ├── spring-core-config.xml
│           ├── spring-mvc-config.xml
│           ├── views
│           │   └── jsp
│           │       └── index.jsp
│           └── web.xml
└── test
├── java
└── resources

22 directories, 27 files
laolang@laolang-Lenovo-G470:~/code/idea/smvcthree$

build.gralde

laolang@laolang-Lenovo-G470:~/code/idea/smvcthree$ cat build.gradle
apply plugin: 'java'
apply plugin: 'war'
apply plugin: 'eclipse-wtp'
apply plugin: 'jetty'

// JDK 7
sourceCompatibility = 1.7
targetCompatibility = 1.7

repositories {
mavenLocal()
mavenCentral()
}

dependencies {
compile 'ch.qos.logback:logback-classic:1.1.3'
compile 'org.springframework:spring-webmvc:4.1.6.RELEASE'
compile 'javax.servlet:jstl:1.2'
}

// Embeded Jetty for testing
jettyRun{
contextPath = "spring4"
httpPort = 8080
}

jettyRunWar{
contextPath = "spring4"
httpPort = 8080
}

task copyJars(type: Copy) {
from configurations.compile
into 'src/main/webapp/WEB-INF/lib' // 目标位置
}laolang@laolang-Lenovo-G470:~/code/idea/smvcthree$

HelloWorldService.java

package com.mkyong.helloworld.service;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

@Service
public class HelloWorldService {

private static final Logger logger = LoggerFactory.getLogger(HelloWorldService.class);

public String getDesc() {

logger.debug("getDesc() is executed!");

return "Gradle + Spring MVC Hello World Example";

}

public String getTitle(String name) {

logger.debug("getTitle() is executed! $name : {}", name);

if(StringUtils.isEmpty(name)){
return "Hello World";
}else{
return "Hello " + name;
}

}

}

WelcomeController.java

package com.mkyong.helloworld.web;

import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.mkyong.helloworld.service.HelloWorldService;

@Controller
public class WelcomeController {

private final Logger logger = LoggerFactory.getLogger(WelcomeController.class);
private final HelloWorldService helloWorldService;

@Autowired
public WelcomeController(HelloWorldService helloWorldService) {
this.helloWorldService = helloWorldService;
}

@RequestMapping(value = "/", method = RequestMethod.GET)
public String index(Map<String, Object> model) {

logger.debug("index() is executed!");

model.put("title", helloWorldService.getTitle(""));

model.put("msg", helloWorldService.getDesc());

return "index";
}

@RequestMapping(value = "/hello/{name:.+}", method = RequestMethod.GET)
public ModelAndView hello(@PathVariable("name") String name) {

logger.debug("hello() is executed - $name {}", name);

ModelAndView model = new ModelAndView();
model.setViewName("index");

model.addObject("title", helloWorldService.getTitle(name));
model.addObject("msg", helloWorldService.getDesc());

return model;

}

}

logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<layout class="ch.qos.logback.classic.PatternLayout">

<Pattern>
%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n
</Pattern>

</layout>
</appender>

<logger name="org.springframework" level="debug"
additivity="false">
<appender-ref ref="STDOUT" />
</logger>

<logger name="com.mkyong.helloworld" level="debug"
additivity="false">
<appender-ref ref="STDOUT" />
</logger>

<root level="debug">
<appender-ref ref="STDOUT" />
</root>

</configuration>

spring-core-config.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd ">

<context:component-scan base-package="com.mkyong.helloworld.service" />

</beans>

spring-mvc-config.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd ">

<context:component-scan base-package="com.mkyong.helloworld.web" />

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/views/jsp/" />
<property name="suffix" value=".jsp" />
</bean>

<mvc:resources mapping="/resources/**" location="/resources/" />

<mvc:annotation-driven />

</beans>

index.jsp

<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html>
<html lang="en">
<head>
<title>Gradle + Spring MVC</title>

<spring:url value="/resources/core/css/hello.css" var="coreCss" />
<spring:url value="/resources/core/css/bootstrap.min.css" var="bootstrapCss" />
<link href="${bootstrapCss}" rel="stylesheet" />
<link href="${coreCss}" rel="stylesheet" />
</head>

<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<a class="navbar-brand" href="#">Project Name</a>
</div>
</div>
</nav>

<div class="jumbotron">
<div class="container">
<h1>${title}</h1>
<p>
<c:if test="${not empty msg}">
Hello ${msg}
</c:if>

<c:if test="${empty msg}">
Welcome Welcome!
</c:if>
<p>
<a class="btn btn-primary btn-lg" href="#" role="button">Learn more</a>
</p>
</div>
</div>

<div class="container">

<div class="row">
<div class="col-md-4">
<h2>Heading</h2>
<p>ABC</p>
<p>
<a class="btn btn-default" href="#" role="button">View details</a>
</p>
</div>
<div class="col-md-4">
<h2>Heading</h2>
<p>ABC</p>
<p>
<a class="btn btn-default" href="#" role="button">View details</a>
</p>
</div>
<div class="col-md-4">
<h2>Heading</h2>
<p>ABC</p>
<p>
<a class="btn btn-default" href="#" role="button">View details</a>
</p>
</div>
</div>

<hr>
<footer>
<p>© Mkyong.com 2015</p>
</footer>
</div>

<spring:url value="/resources/core/css/hello.js" var="coreJs" />
<spring:url value="/resources/core/css/bootstrap.min.js" var="bootstrapJs" />

<script src="${coreJs}"></script>
<script src="${bootstrapJs}"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>

</body>
</html>

web.xml

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">

<display-name>Gradle + Spring MVC Hello World + XML</display-name>
<description>Spring MVC web application</description>

<!-- For web context -->
<servlet>
<servlet-name>hello-dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-mvc-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>hello-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<!-- For root context -->
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-core-config.xml</param-value>
</context-param>

</web-app>

来源：

这个例子的源码来自：

http://www.mkyong.com/spring-mvc/gradle-spring-mvc-web-project-example/#

不过原文中有一个错误，那就是spring-web-config.xml应该改为spring-mvc-config.xml

原文中提供了下载地址

https://github.com/mkyong/spring4-mvc-gradle-xml-hello-world

还有就是build.gradle是正确的，但是如果你就这样导入idea，会有错误提示，所以还需要处理idea的jar包问题，这个问题的解决参考自：

http://www.cnblogs.com/wenjingu/p/3822989.html

idea导入jar包参考自：

http://www.cnblogs.com/lonelyxmas/archive/2011/07/17/2108895.html

具体操作步骤：

1、idea中新建好gradle项目，并把各部分代码按照正确的位置copy进去

2、在命令行中运行:

gradle build

gradle copyJars

这一步的目的是把所需要的jar提取出来，放到WEB-INF/lib中，当然，在idea中，你在这个目录中放入jar包是没有用的，不过这不是问题

3、idea导入jar包

idea中导入jar包是和eclipse不同的，这个我已经说明的所参考的地方

4、运行项目

gradle jettyRun

5、一些注意事项

1、网速要快 2、网络要稳定 3、要有耐心