之前一直在做的一个GIS系统项目,采用了jsp+servlet框架,数据传输框架采用了apache的thrift框架,短时多传的风格还不错,但是较其他的java web项目显得有点太臃肿了,现在给大家介绍一下最近刚刚研究的轻量级java web框架。

1.首先是创建maven项目

本人开发用的IDE用的是IDEA 2017,Google上这样评价IDEA:最适合开发java程序的IDE,看到这里大家就应该知道了。首先新建一个maven程序,如图

选择从archeType创建,在src-》main文件夹下创建java(resource)文件夹,这样才能在该文件夹下创建java class,同时在java目录下创建如下四个文件夹,分别代表控制器、数据存储处理、对象模型、处理服务。

2.添加maven项目依赖。

pom.xml,各个依赖项所对应的模块名称已注明。

<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>ssm_test</groupId>
<artifactId>demo1</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>demo1 Maven Webapp</name>
<url>http://maven.apache.org</url>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.1.4.RELEASE</spring.version>
<jackson.version>2.5.0</jackson.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency> <!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</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-context</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency> <!-- 使用SpringMVC需配置 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency> <!-- 关系型数据库整合时需配置 如hibernate jpa等 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency> <dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.4</version>
</dependency> <!-- log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency> <dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.1</version>
</dependency> <dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.18</version>
</dependency> <!-- json -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.3</version>
</dependency> <dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency> <dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency> <dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency> <!-- aop -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.4</version>
</dependency> <!-- servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>3.0-alpha-1</version>
<scope>provided</scope>
</dependency> <dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency> <dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<!-- 上传文件 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency> <dependency>
<groupId>com.github.miemiedev</groupId>
<artifactId>mybatis-paginator</artifactId>
<version>1.2.17</version>
</dependency> <dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.40</version>
</dependency> </dependencies>
</project>

3.在service下创建服务接口类

ITestService.Java

package com.chuyin.service;

import com.alibaba.fastjson.JSONObject;

/**
* Created by Zhang Feiyue on 2017/7/8.
*/
public interface ITestService {
public JSONObject getUsers(JSONObject param);
}

4.在service文件夹下创建实现接口方法的类

TestService.Java

package com.chuyin.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.chuyin.mapper.TestMapper;
import com.chuyin.service.ITestService;
import org.springframework.stereotype.Service; import javax.annotation.Resource;
import javax.annotation.Resources;
import java.util.List; /**
* Created by Zhang Feiyue on 2017/7/8.
*/
@Service
public class TestService implements ITestService {
@Resource
private TestMapper testMapper; @Override
public JSONObject getUsers(JSONObject param) {
List<JSONObject> userList = testMapper.getUsers(param);
JSONObject result = new JSONObject();
result.put("userList", userList);
return result;
}
}

5.在mapper文件夹下创建数据获取接口类

TestMapper.Java

package com.chuyin.mapper;

import com.alibaba.fastjson.JSONObject;
import org.springframework.stereotype.Component; import java.util.List; /**
* Created by Zhang Feiyue on 2017/7/8.
*/
@Component
public interface TestMapper {
public List<JSONObject> getUsers(JSONObject param);
}

6.创建控制器实现类

TestController.Java

package com.chuyin.controller;

import com.alibaba.fastjson.JSONObject;
import com.chuyin.service.impl.TestService;
import org.springframework.stereotype.Controller;
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 javax.annotation.Resource; /**
* Created by Zhang Feiyue on 2017/7/8.
*/
@RestController
@RequestMapping("/test")
public class TestController {
@Resource
private TestService testService; @RequestMapping(value = "/getUser", method = RequestMethod.POST)
public JSONObject getUser(@RequestBody JSONObject param) {
JSONObject result = testService.getUsers(param);
result.put("success", true);
return result;
}
}

7.resources文件下创建文件夹,并配置TestMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.chuyin.mapper.TestMapper">
<select id="getUsers" parameterType="JSON" resultType="JSON">
<![CDATA[
select * from base_user where username=#{username}
]]>
</select>
</mapper>

8.创建application.properties文件,配置jdbc

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/chuyin
jdbc.username=root
jdbc.password=root

9.配置log4j.xml,mybatis-config.xml,spring-common.xml,spring-mvc.xml

log4j.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration PUBLIC "-//LOGGER" "log4j.dtd"> <log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"> <!-- Appenders -->
<appender name="console" class="org.apache.log4j.ConsoleAppender">
<param name="Target" value="System.out"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d %-5p: %c - %m%n"/>
</layout>
</appender> <appender name="filelog_daily" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="${catalina.home}/logs/catalina.log"/>
<param name="DatePattern" value="'.'yyyy-MM-dd"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d %-5p: %c - %m%n"/>
</layout>
</appender> <appender name="errorlog_daily" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="${catalina.home}/logs/error.log"/>
<param name="DatePattern" value="'.'yyyy-MM-dd"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d %-5p: %c - %m%n"/>
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="ERROR" />
<param name="LevelMax" value="ERROR" />
</filter>
</appender> <!-- 3rdparty Loggers -->
<!--<logger name="org.springframework.core">
<level value="info"/>
</logger>--> <logger name="java.sql.*">
<level value="info"/>
</logger> <!--<logger name="org.springframework.context">
<level value="info"/>
</logger>--> <!--<logger name="org.springframework.web">
<level value="info"/>
</logger>--> <logger name="org.springframework">
<level value="info"/>
<!--<appender-ref ref="bizlog_daily" />-->
</logger> <!-- 下面是打印mybatis语句的配置-->
<logger name="com.ibatis" additivity="true">
<level value="DEBUG" />
<!--<appender-ref ref="bizlog_daily" />-->
</logger> <logger name="java.sql.Connection" additivity="true">
<level value="DEBUG" />
<!--<appender-ref ref="bizlog_daily" />-->
</logger>
<logger name="java.sql.Statement" additivity="true">
<level value="DEBUG" />
<!--<appender-ref ref="bizlog_daily" />-->
</logger>
<logger name="java.sql.PreparedStatement" additivity="true">
<level value="info" />
<!--<appender-ref ref="bizlog_daily" />-->
</logger>
<logger name="java.sql.ResultSet" additivity="true">
<level value="info" />
<!--<appender-ref ref="bizlog_daily" />-->
</logger> <!-- Root Logger -->
<root>
<priority value="DEBUG"/>
<appender-ref ref="console"/>
<appender-ref ref="filelog_daily"/>
<appender-ref ref="errorlog_daily"/>
</root> </log4j:configuration>

mybatis-config.xml

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org/DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<setting name="jdbcTypeForNull" value="NULL"/>
<setting name="safeResultHandlerEnabled" value="false"/>
</settings> <!-- 实体类,简称 -设置别名 -->
<typeAliases>
<typeAlias alias="JSON" type="com.alibaba.fastjson.JSONObject"/>
</typeAliases>
<!-- 实体接口映射资源 -->
<plugins>
<plugin interceptor="com.github.miemiedev.mybatis.paginator.OffsetLimitInterceptor">
<property name="dialectClass" value="com.github.miemiedev.mybatis.paginator.dialect.MySQLDialect"/>
</plugin>
</plugins> <!--
说明:如果xxMapper.xml配置文件放在和xxMapper.java统一目录下,mappers也可以省略,因为org.mybatis.spring.mapper.MapperFactoryBean默认会去查找与xxMapper.java相同目录和名称的xxMapper.xml
-->
<mappers>
<mapper resource="com/chuyin/mapper/TestMapper.xml"/>
</mappers> </configuration>

spring-common.xml

<?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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 注解扫描包 -->
<context:component-scan base-package="com.chuyin"></context:component-scan> <bean id="dataSourceMaster"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!--<bean id="dataSourceSlave"-->
<!--class="org.springframework.jdbc.datasource.DriverManagerDataSource">-->
<!--<property name="driverClassName" value="${jdbc.driver}" />-->
<!--<property name="url" value="${jdbc.url}" />-->
<!--<property name="username" value="${jdbc.username}" />-->
<!--<property name="password" value="${jdbc.password}" />-->
<!--</bean>-->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!--<bean id="dataSource" class="com.skytech.datasource.MultiDataSource">
<property name="targetDataSources">
<map key-type="java.lang.String">
<entry key="master" value-ref="dataSourceMaster"/>
<!–<entry key="slave1" value-ref="dataSourceSlave"/>–>
<!–<entry key="slave2" value-ref="dataSourceSlave2"/>–>
</map>
</property>
<property name="defaultTargetDataSource" ref="dataSourceMaster"/>
</bean>--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.chuyin.mapper"></property>
<!--<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean> <bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/> <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<!--<bean id="multiDataSourceAspect" class="com.skytech.datasource.DataSourceAspect">
<property name="dataSource" ref="dataSource"/>
<property name="masterKey" value="master"/>
<property name="slaveKeys">
<array>
<value>slave1</value>
<value>slave2</value>
</array>
</property>
</bean>
<aop:config>
<aop:aspect id="c" ref="multiDataSourceAspect">
<aop:pointcut id="tx" expression="execution(* com.skytech.pkdata.mapper.*.*(..))"/>
<aop:before pointcut-ref="tx" method="before"/>
</aop:aspect>
</aop:config>-->
</beans>

spring-mvc.xml

<?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: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-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath*:application.properties</value>
</list>
</property>
<property name="ignoreUnresolvablePlaceholders" value="true"/>
<property name="fileEncoding" value="UTF-8"></property>
</bean> <!-- 注解扫描包 -->
<context:component-scan base-package="com.chuyin">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
</context:component-scan> <!-- 开启注解 -->
<mvc:annotation-driven/>
<!--
配置静态资源,直接映射到对应的文件夹,不被DispatcherServlet处理,3.04新增功能,需要重新设置spring-mvc-3.0.xsd
-->
<!--<mvc:resources mapping="/css/**" location="/css/" />-->
<!--<mvc:resources mapping="/img/**" location="/img/" />-->
<!--<mvc:resources mapping="/js/**" location="/js/" />-->
<mvc:resources mapping="/lib/**" location="/lib/"/>
<!--<mvc:resources mapping="/jsp/**" location="/jsp/" />-->
<!--<mvc:resources mapping="/images/**" location="/images/" />-->
<!--<mvc:resources mapping="/html/**" location="/html/" />--> <!-- 定义跳转的文件的前后缀 ,视图模式配置-->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀,变成一个 可用的url地址 -->
<property name="prefix" value="/html/"/>
<property name="suffix" value=".html"/>
</bean>
</beans>

好了,至此后台已全部配置完毕,看一下效果吧,可以看到数据已经获取成功。

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