例子使用的IDEA版本是2017.1,网上可以找到破解码。
1.新建Maven项目
新建Maven项目,如图选择。
接下来的填写GroupId、AtifactID,按照自己想法起个名字就好。
选择Maven仓库,按照默认的,直接点next。
填写项目名,起个名儿吧。
点击Finish,就创建了一个Maven项目。
2.添加Spring依赖
打开pom.xml文件。
2.1.添加版本号配置
<properties>
<spring.version>4.3.0.RELEASE</spring.version>
<javax.servlet.version>2.5</javax.servlet.version>
</properties>
2.2.dependencies添加如下依赖
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
<type>jar</type>
</dependency>
<dependency>
<artifactId>spring-core</artifactId>
<groupId>org.springframework</groupId>
<type>jar</type>
<version>${spring.version}</version>
</dependency>
<dependency>
<artifactId>spring-jdbc</artifactId>
<groupId>org.springframework</groupId>
<type>jar</type>
<version>${spring.version}</version>
</dependency>
<dependency>
<artifactId>spring-tx</artifactId>
<groupId>org.springframework</groupId>
<type>jar</type>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<!--jackson dependencies jar-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.8.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.5</version>
</dependency>
<!--servlet dependencies jar-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${javax.servlet.version}</version>
<scope>provided</scope>
</dependency>
<!-- log4j -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.6.2</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.6.2</version>
</dependency>
<!-- JsonObject -->
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.3</version>
<classifier>jdk15</classifier>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.6</version>
</dependency>
<!-- JSP and JSTL SUPPORT -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- commons-codec -->
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.4</version>
</dependency>
</dependencies>
3.配置ApplicationContext-context.xml
在resources目录下,创建spring目录,加入ApplicationContext-context.xml文件,内容如下:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:task="http://www.springframework.org/schema/task"
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 http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd">
<context:component-scan base-package="your.package">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
</beans>
其中,base-package=”your.package”根据自己的项目包名写,比如com.example。
4.配置springmvc-servlet.xml和web.xml
在WEB-INF目录下,新建springmvc-servlet.xml:
把package=”com.example.controller”替换成你的controller路径即可。
<?xml version="1.0" encoding="UTF-8"?>
<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">
<!-- 配置注解驱动 -->
<mvc:annotation-driven/>
<!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 -->
<context:component-scan base-package="com.example.controller"/>
<!-- 对模型视图名称的解析,即在模型视图名称添加前后缀 使用JSP-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
然后修改web.xml文件为如下:
<?xml version="1.0" encoding="UTF-8"?>
<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_3_0.xsd"
version="3.0" metadata-complete="true">
<display-name>tc-usermodel</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:/spring/ApplicationContext-context.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<servlet-name>springmvc</servlet-name>
</filter-mapping>
<!-- Handles all requests into the application -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/springmvc-servlet.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
至此,新建Spring Maven项目就大功告成了。下面是代码写法。
5.项目目录结构
这是一个简洁的目录结构。
6.一个Spring http接口的最简洁例子
控制器Controller写法
@Controller
@RequestMapping(value = "/test")
public class MainController {
//自动实例化
@Autowired
private UserModelService userModelService;
//这个例子返回一个接口,因为有@ResponseBody注解
@RequestMapping(value = "/model",method = RequestMethod.GET,produces = "application/json;charset=UTF-8")
@ResponseBody
public UserModel getUserModel(UserModelParams params) {
UserModel userModel = userModelService.getUserModel(params);
return userModel;
}
//这个例子跳转到 hello.jsp页面,因为没有@ResponseBody注解
@RequestMapping(value = "/jspview",method = RequestMethod.GET)
public String getUserjsp(UserModelParams params) {
return "hello";
}
}
java接口UserModelService:
public interface UserModelService {
String getUserModel(UserModelParams params);
JSONArray getAllUserModel();
}
具体业务写在UserModelServiceImpl ,注意要继承UserModelService 接口。
@Service("UserModelServiceImpl")
public class UserModelServiceImpl implements UserModelService {
@Override
public JSONArray getAllUserModel(){
JsonArray jsonArray = new JsonArray();
jsonArray.add("name","jack");
jsonArray.add("age",123);
return jsonArray;
}
}
7.启动服务
服务器我推荐使用jetty插件,直接在maven中配置就好,非常方便。
<build>
<finalName>springtest</finalName>
<plugins>
<!--maven compiler plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<!--jetty plugin -->
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.1.0.v20131115</version>
</plugin>
</plugins>
</build>
在IDEA中最右侧,双击jetty:run启动服务
然后在浏览器中输入:http://localhost:8080/test/model ,得到响应。