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web项目
页面设计 仿照小米官网#xff0c;将首页保存到本地为一个html页面#xff0c;再将html页面保存为jsp页面#xff0c;在项目中的web.xml文件中配置了欢迎页 welcome-file-listwelcome-fileTypesServlet/welcome-file
/welcome-…day65
web项目
页面设计 仿照小米官网将首页保存到本地为一个html页面再将html页面保存为jsp页面在项目中的web.xml文件中配置了欢迎页 welcome-file-listwelcome-fileTypesServlet/welcome-file
/welcome-file-list package com.saas.servlet;
import com.saas.entity.Types;
import com.saas.service.ITypesService;
import com.saas.service.impl.TypesServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
WebServlet(/TypesServlet)
public class TypesServlet extends HttpServlet {
private ITypesService typesService new TypesServiceImpl();
Overrideprotected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {ListTypes types typesService.getAllTypes();
req.setAttribute(types, types);
req.getRequestDispatcher(types.jsp).forward(req, resp);}
} package com.saas.service;
import com.saas.entity.Types;
import java.util.List;
public interface ITypesService {ListTypes getAllTypes();
} package com.saas.service.impl;
import com.saas.dao.ITypesDao;
import com.saas.dao.impl.TypesDaoImpl;
import com.saas.entity.Types;
import com.saas.service.ITypesService;
import java.util.List;
public class TypesServiceImpl implements ITypesService {
private ITypesDao typesDao new TypesDaoImpl();
Overridepublic ListTypes getAllTypes() {return typesDao.getAllTypes();}
} package com.saas.dao;
import com.saas.entity.Types;
import java.util.List;
public interface ITypesDao {ListTypes getAllTypes();
} package com.saas.dao.impl;
import com.saas.dao.ITypesDao;
import com.saas.entity.Types;
import com.saas.util.DruidUtil;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import java.sql.SQLException;
import java.util.List;
public class TypesDaoImpl implements ITypesDao {
private QueryRunner qr new QueryRunner(DruidUtil.getDataSource());
Overridepublic ListTypes getAllTypes() {try {return qr.query(select * from types, new BeanListHandlerTypes(Types.class));} catch (SQLException e) {throw new RuntimeException(e);}}
} package com.saas.util;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.pool.DruidDataSourceFactory;
import javax.sql.DataSource;
public class DruidUtil {
private static Env env Env.getInstance();
public static DataSource getDataSource(){try {DruidDataSource dataSource (DruidDataSource) DruidDataSourceFactory.createDataSource(env);
dataSource.setUrl(env.getProperty(url));dataSource.setUsername(env.getProperty(user));dataSource.setPassword(env.getProperty(pass));dataSource.setDriverClassName(env.getProperty(driver));
return dataSource;} catch (Exception e) {throw new RuntimeException(e);}}
} package com.saas.util;
import java.io.IOException;
import java.util.Properties;
public class Env extends Properties {
private static final long serialVersionUID 1L;
private static Env env new Env();
private Env() {super();try {load(getClass().getResourceAsStream(/db.properties));} catch (IOException e) {throw new RuntimeException(e);}}
public static Env getInstance() {return env;}
public static String get(String key) {return env.getProperty(key);}
} drivercom.mysql.jdbc.Driver
urljdbc:mysql://localhost:3306/mi?characterEncodingutf-8
userroot
passAbc1234 页面代码 将页面展示出来
