详解MyEclipse中搭建spring-boot+mybatis+freemarker框架

1.在myeclipse里创建一个maven项目。file>new>maven project：

勾选图中红色部分，然后点击next。

2.填写下图中红色部分然后点击finish。

3.此时一个maven项目已经生成，目录结构如下：

4.打开pom.xml在里面编辑如下内容：

<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.lm.spring-boot</groupid>
  <artifactid>spring-boot</artifactid>
  <version>0.0.1-snapshot</version>
  <properties>
    <project.build.sourceencoding>utf-8</project.build.sourceencoding>
  </properties>
  <parent>
    <groupid>org.springframework.boot</groupid>
    <artifactid>spring-boot-starter-parent</artifactid>
    <version>1.3.0.release</version>
  </parent>
  <dependencies>
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-web</artifactid>
    </dependency>
    <!--视图采用freemarker渲染 -->
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-freemarker</artifactid>
    </dependency>
    <!-- jdbc -->
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-jdbc</artifactid>
    </dependency>
    <!-- mybatis -->
    <dependency>
      <groupid>org.mybatis</groupid>
      <artifactid>mybatis-spring</artifactid>
      <version>1.2.2</version>
    </dependency>
    <dependency>
      <groupid>org.mybatis</groupid>
      <artifactid>mybatis</artifactid>
      <version>3.2.8</version>
    </dependency>
    <!-- mysql -->
    <dependency>
      <groupid>mysql</groupid>
      <artifactid>mysql-connector-java</artifactid>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <artifactid>maven-compiler-plugin</artifactid>
        <configuration>
          <source>1.6</source>
          <target>1.6</target>
        </configuration>
      </plugin>
      <plugin>
        <groupid>org.springframework.boot</groupid>
        <artifactid>spring-boot-maven-plugin</artifactid>
        <executions>
          <execution>
            <goals>
              <goal>repackage</goal>
            </goals>
          </execution>
        </executions>
        <dependencies>
          <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>springloaded</artifactid>
            <version>1.2.5.release</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
    <!-- 指定最终生成jar包的文件名-->
    <finalname>spring-boot</finalname>
  </build>
</project>

5.创建程序入口application.java.

package com.lm.application;

import org.apache.ibatis.session.sqlsessionfactory;
import org.apache.tomcat.jdbc.pool.datasource;
import org.mybatis.spring.sqlsessionfactorybean;
import org.mybatis.spring.annotation.mapperscan;
import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.enableautoconfiguration;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.boot.context.properties.configurationproperties;
import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.componentscan;
import org.springframework.core.io.support.pathmatchingresourcepatternresolver;
import org.springframework.jdbc.datasource.datasourcetransactionmanager;
import org.springframework.transaction.platformtransactionmanager;

@enableautoconfiguration
@springbootapplication
@componentscan(basepackages={"com.lm"})//指定spring管理的bean所在的包
@mapperscan("com.lm.dao")//指定mybatis的mapper接口所在的包
public class application{

  public static void main(string[] args) {
    springapplication.run(application.class, args);
  }

  //创建数据源
  @bean
  @configurationproperties(prefix = "spring.datasource")//指定数据源的前缀 ,在application.properties文件中指定
  public datasource datasource() {
    return new datasource();
  }

  //创建sqlsessionfactory
  @bean
  public sqlsessionfactory sqlsessionfactorybean() throws exception {

    sqlsessionfactorybean sqlsessionfactorybean = new sqlsessionfactorybean();
    sqlsessionfactorybean.setdatasource(datasource());

    pathmatchingresourcepatternresolver resolver = new pathmatchingresourcepatternresolver();

    sqlsessionfactorybean.setmapperlocations(resolver.getresources("classpath:/mybatis/*.xml"));

    return sqlsessionfactorybean.getobject();
  }

  //创建事物管理器
  @bean
  public platformtransactionmanager transactionmanager() {
    return new datasourcetransactionmanager(datasource());
  }
}

6.在src/main/resources下建立应用的配置文件application.properties。

#datasource
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/你的数据库名称?useunicode=true&characterencoding=utf8&zerodatetimebehavior=converttonull
spring.datasource.username=数据库用户名
spring.datasource.password=数据库密码
spring.datasource.driver-class-name=com.mysql.jdbc.driver
# freemarker (freemarkerautoconfiguration)
spring.freemarker.allow-request-override=false
spring.freemarker.allow-session-override=false
spring.freemarker.cache=true
spring.freemarker.charset=utf-8
spring.freemarker.check-template-location=true
spring.freemarker.content-type=text/html
spring.freemarker.enabled=true
spring.freemarker.expose-request-attributes=false
spring.freemarker.expose-session-attributes=false
spring.freemarker.expose-spring-macro-helpers=true
spring.freemarker.prefer-file-system-access=true
spring.freemarker.suffix=.ftl
spring.freemarker.template-loader-path=classpath:/templates/
spring.freemarker.settings.template_update_delay=0
spring.freemarker.settings.default_encoding=utf-8
spring.freemarker.settings.classic_compatible=true
spring.freemarker.order=1
#server
server.port=80

相应的配置需要根据自己的实际情况去做修改。

7.在在src/main/resources下创建mybatis目录并在目录下创建usermapper.xml文件：

<?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.lm.dao.usermapper">
 <select id="findall" resulttype="com.lm.model.user" parametertype="java.lang.string">
  select id, username,password,email from t_user
 </select>
</mapper>

8.创建usercontroller类和视图文件：

package com.lm.controller;

import java.util.list;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.stereotype.controller;
import org.springframework.ui.modelmap;
import org.springframework.web.bind.annotation.requestmapping;
import com.lm.model.user;
import com.lm.service.userservice;

@controller
@requestmapping("/user")
public class usercontroller {

  @autowired
  private userservice userservice;

  @requestmapping("/list")
  public string list(modelmap map){
    list<user> userlist=userservice.findall();
    map.addattribute("userlist", userlist);
    return "/user/list";
  }
}

可以看出list方法返回的是一个字符串，因为我们给应用加载了freemarker模块做视图展现，所以需要创建一个list模板，模板所在的目录在application.properties中指定为spring.freemarker.template-loader-path=classpath:/templates/，所以我们需要在src/main/resources下创建templates目录，然后在templates下创建user目录，模板文件后缀在application.properties中指定为spring.freemarker.suffix=.ftl，所以最终建立一个list.ftl文件:

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>用户列表</title>
</head>
<body>
  <table>
    <tr>
      <th>id</th><th>用户名</th><th>密码</th><th>邮箱</th>
    </tr>
    <#list userlist as user>
    <tr>
      <td>${user.id}</td> <td>${user.username}</td><td>${user.password}</td><td>${user.email}</td>
    </tr>
    </#list>
 </table>
</body>
</html>

模板文件所在位置的目录结构如下图:

9.创建userservice接口:

package com.lm.service;

import java.util.list;

import com.lm.model.user;

public interface userservice {

  list<user> findall();

}

10.创建userserviceimpl类实现userservice接口:

package com.lm.service.impl;

import java.util.list;

import org.springframework.beans.factory.annotation.autowired;
import org.springframework.stereotype.service;

import com.lm.dao.usermapper;
import com.lm.model.user;
import com.lm.service.userservice;

@service
public class userserviceimpl implements userservice{

  @autowired
  private usermapper usermapper;

  @override
  public list<user> findall() {
    return usermapper.findall();
  }

}

11.创建usermapper接口:

package com.lm.dao;

import java.util.list;
import com.lm.model.user;

public interface usermapper {

  list<user> findall();

}

12.创建实体类user:

package com.lm.model;

public class user {
  private integer id;
  private string username;
  private string password;
  private string email;

  public integer getid() {
    return id;
  }

  public void setid(integer id) {
    this.id = id;
  }

  public string getusername() {
    return username;
  }

  public string getemail() {
    return email;
  }

  public void setemail(string email) {
    this.email = email;
  }

  public void setusername(string username) {
    this.username = username;
  }

  public string getpassword() {
    return password;
  }

  public void setpassword(string password) {
    this.password = password;
  }

}

13.至此spring-boot框架已搭建完成，然后在application.java中run as >java application此时在控制台会看到如下日志输出：

14.打开浏览器在地址栏输入http://localhost/user/list便可以看到以下效果:

15.在pom.xml文件上右键run as>maven install可将项目打包为jar文件，生成的jar在target目录下，可以将此jar拷贝到服务器上通过"java -jar 最终生成jar包的名字"运行项目。

16.本项目的源码已经上传到，有需要的朋友可以自行下载

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