新建web工程spring-netcross
1.导入spring文件夹里的七个jar包,另外还要导入jdbc-lib的四个jar包,ojdbc.jar,commoms-pool,commons-dbcp-1.2.1.jar,commons-collections4-4.0.jar
2.复制springmvc02下的spring-mvc.xml文件,新建com.tarena.oss包
3.com.tarena.oss包下新建entity包,新建Admin这个实体类,属性get/set方法,以及toString方法(方便测试输出)
package com.tarena.oss.entity;
import java.io.Serializable;
import java.sql.Timestamp;
public class Admin implements Serializable{
private Integer adminId;
private String adminCode;
private String password;
private String name;
private String telephone;
private String email;
private Timestamp enrolldate;
public Integer getAdminId() {
return adminId;
}
public void setAdminId(Integer adminId) {
this.adminId = adminId;
}
public String getAdminCode() {
return adminCode;
}
public void setAdminCode(String adminCode) {
this.adminCode = adminCode;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Timestamp getEnrolldate() {
return enrolldate;
}
public void setEnrolldate(Timestamp enrolldate) {
this.enrolldate = enrolldate;
}
@Override
public String toString() {
return "Admin [adminId=" + adminId + ", adminCode=" + adminCode
+ ", password=" + password + ", name=" + name + ", telephone="
+ telephone + ", email=" + email + ", enrolldate=" + enrolldate
+ "]";
}
}
4.com.tarena.oss包下新建dao包,新建AdminDAO接口,添加findByAdminCode方法,再新建dao包下的jdbc包,新建AdminDAOImpl实现接口
AdminDAO接口:
package com.tarena.oss.dao;
import com.tarena.oss.entity.Admin;
public interface AdminDAO {
public Admin findByAdminCode(String adminCode);
}
AdminDAOImpl实现接口:
package com.tarena.oss.dao.jdbc;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.annotation.Resource;
import javax.sql.DataSource;
import org.springframework.stereotype.Repository;
import com.tarena.oss.dao.AdminDAO;
import com.tarena.oss.entity.Admin;
@Repository("adminDAO")
public class AdminDAOImpl implements AdminDAO{
/*数据源与连接池的关系
*
* 数据源负责管理连接池*/
@Resource(name="ds")
private DataSource ds;
public Admin findByAdminCode(String adminCode) {
if(adminCode==null){
return null;
}
Connection conn = null;
try {
conn = ds.getConnection();
String sql = "select * from admin_info_lch where admin_code=?";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setString(1, adminCode);
ResultSet rs = ps.executeQuery();
if(rs.next()){
Admin admin = new Admin();
admin.setAdminId(rs.getInt("admin_id"));
admin.setAdminCode(rs.getString("admin_code"));
admin.setPassword(rs.getString("password"));
admin.setName(rs.getString("name"));
admin.setTelephone(rs.getString("telephone"));
admin.setEmail(rs.getString("email"));
admin.setEnrolldate(rs.getTimestamp("enrolldate"));
return admin;
}
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("根据编码查询管理员失败");
}finally{
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return null;
}
}
5.复制netctoss项目下的db.properties文件,到该项目下的src下
driver=oracle.jdbc.OracleDriver
url=jdbc:oracle:thin:@localhost:1521:xe
user=system
pwd=1234
6.修改spring-mvc.xml文件,使用集合的方式读取db.properties文件的内容
<!-- 配置组件扫描 -->
<context:component-scan base-package="com.tarena.oss" />
<!-- 配置spring mvc注解扫描 -->
<mvc:annotation-driven/>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 读取db.properties文件的内容 -->
<util:properties id="jdbc" location="classpath:db.properties">
</util:properties>
7.新建test包,新建测试类test1用于测试读取db.properties文件的内容是否成功。
@Test //测试db.properties文件是否正确读取
public void test1(){
ApplicationContext ac =
new ClassPathXmlApplicationContext("spring-mvc.xml");
System.out.println(ac.getBean("jdbc"));
}
8.在AdminDAOImpl添加成员变量数据源DadaSource ds,并且使用@Resource(name="ds")注入该属性。同时,在AdminDAOImpl这个类前面添加@Repository("adminDAO")。
9.在findByAdminCode方法中添加代码,根据管理员账号查询管理员。
10.在spring-xml中添加ds的参数配置。bean的id为ds是根据@Resource(name="ds")命名为ds的。然后根据db.properties为ds配置相关参数。
xml中修改代码如下:
<!-- 配置组件扫描 -->
<context:component-scan base-package="com.tarena.oss" />
<!-- 配置spring mvc注解扫描 -->
<mvc:annotation-driven/>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 读取db.properties文件的内容 -->
<util:properties id="jdbc" location="classpath:db.properties">
</util:properties>
<bean id="ds"
class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="url" value="#{jdbc.url}"/>
<property name="driverClassName" value="#{jdbc.driver}"/>
<property name="username" value="#{jdbc.user}"/>
<property name="password" value="#{jdbc.pwd}"/>
</bean>
11.组件扫描中检查包名是否为com.tarena.oss,然后对AdminDAOImpl这个类中的方法进行测试。因为此时还没有涉及到springMVC模式(无controller类),故spring-mvc.xml不会自动读取,我们需要在测试代码中写上开启容器的代码。
@Test
public void test2(){
ApplicationContext ac =
new ClassPathXmlApplicationContext("spring-mvc.xml");
AdminDAO dao =
ac.getBean("adminDAO",AdminDAO.class);
Admin admin = dao.findByAdminCode("caocao");
System.out.println(admin);
}
12..com.tarena.oss包下新建Service包,在新建LoginService接口,添加checkLogin方法。再新建LoginServiceImpl实现类,实现该方法。首先添加注解@Service("loginService"),再在类中添加dao成员变量,并使用@Resource(name="daminDAO")注解,name是参考AdminDAOImpl类,它最开始就被注解为@Repository("adminDAO")。调用dao的方法,如果管理员为空或者密码错误,则抛出自定义异常,否则返回该admin。所以,此时,在Service包下新建spring包,再新建ApplicationException类。
LoginService 接口:
package com.tarena.oss.Service;
import com.tarena.oss.Service.spring.ApplicationException;
import com.tarena.oss.entity.Admin;
import com.tarena.oss.entity.ResultData;
/*
* 业务层接口
* */
public interface LoginService {
public Admin checkLogin(String adminCode,String pwd) throws ApplicationException;
}
LoginServiceImpl实现类:
package com.tarena.oss.Service;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.tarena.oss.Service.spring.ApplicationException;
import com.tarena.oss.dao.AdminDAO;
import com.tarena.oss.entity.Admin;
import com.tarena.oss.entity.ResultData;
/*
* 业务层的实现
* */
@Service("loginService")
public class LoginServiceImpl implements LoginService {
@Resource(name="adminDAO")
private AdminDAO dao;
public Admin checkLogin(String adminCode, String pwd) throws ApplicationException{
System.out.println("checkLogin方法");
//保持好习惯,先定义为null,再初始化。
Admin admin = null;
admin = dao.findByAdminCode(adminCode);
try{
if(admin==null){
throw new ApplicationException("账号不存在");
}
if(!admin.getPassword().equals(pwd)){
throw new ApplicationException("密码错误");
}
}catch(Exception e){
e.printStackTrace();
}
return admin;
}
}
13.在测试中写test3,测试loginService
@Test
public void test3(){
ApplicationContext ac =
new ClassPathXmlApplicationContext("spring-mvc.xml");
LoginService service =
ac.getBean("loginService",LoginService.class);
Admin admin = null;
try {
admin = service.checkLogin("caocao", "123");
} catch (ApplicationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(admin);
}
14.复制netctoss中的styles文件夹,复制styles文件夹到WebRoot下。
15.在WebRoot/WEB-INF下新建login.jsp(拷贝原来netctoss项目做相应修改),添加<form></form>,修改<input>中的name,修改其代码提交表单时采用js脚本。