4.0.0
org.example
testssm02
1.0-SNAPSHOT
war
testssm02 Maven Webapp
http://www.example.com
UTF-8
1.8
1.8
3.7.0
5.0.2.RELEASE
3.4.5
5.1.44
5.1.2
1.3.1
2.1.1
2.4.3
2.9.1
4.12
4.0.0
1.18.2
org.springframework
spring-context
${spring.version}
org.springframework
spring-orm
${spring.version}
org.springframework
spring-tx
${spring.version}
org.springframework
spring-aspects
${spring.version}
org.springframework
spring-web
${spring.version}
org.springframework
spring-test
${spring.version}
org.mybatis
mybatis
${mybatis.version}
mysql
mysql-connector-java
${mysql.version}
com.github.pagehelper
pagehelper
${pagehelper.version}
org.mybatis
mybatis-spring
${mybatis.spring.version}
org.apache.commons
commons-dbcp2
${commons.dbcp2.version}
org.apache.commons
commons-pool2
${commons.pool2.version}
org.apache.logging.log4j
log4j-core
${log4j2.version}
org.apache.logging.log4j
log4j-api
${log4j2.version}
org.apache.logging.log4j
log4j-web
${log4j2.version}
junit
junit
${junit.version}
test
javax.servlet
javax.servlet-api
${servlet.version}
provided
org.projectlombok
lombok
${lombok.version}
provided
org.springframework
spring-webmvc
${spring.version}
javax.servlet.jsp
javax.servlet.jsp-api
2.3.3
jstl
jstl
1.2
taglibs
standard
1.1.2
testssm02
src/main/java
**/*.xml
src/main/resources
jdbc.properties
*.xml
org.apache.maven.plugins
maven-compiler-plugin
${maven.compiler.plugin.version}
${maven.compiler.target}
${project.build.sourceEncoding}
org.mybatis.generator
mybatis-generator-maven-plugin
1.3.2
mysql
mysql-connector-java
${mysql.version}
true
maven-clean-plugin
3.1.0
maven-resources-plugin
3.0.2
maven-compiler-plugin
3.8.0
maven-surefire-plugin
2.22.1
maven-war-plugin
3.2.2
maven-install-plugin
2.5.2
maven-deploy-plugin
2.8.2
applicationContext.xml
applicationContext-mybatis.xml
generatorConfig.xml
jdbc.properties
log4j2.xml
mybatis.cfg.xml
springmvc-servlet.xml
Archetype Created Web Application
contextConfigLocation
classpath:applicationContext.xml
org.springframework.web.context.ContextLoaderListener
SpringMVC
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
/WEB-INF/springmvc-servlet.xml
1
true
SpringMVC
/
encodingFilter
org.springframework.web.filter.CharacterEncodingFilter
true
encoding
UTF-8
encodingFilter
/*
将t_struts_class表逆向生成出Model、Mapper.xml、Mapper.java
分页查询补充
Mapper配置文件
Mapper层
List listPager(Clayy clayy);
Service层
@Override
public List listPager(Clayy clayy, PageBean pageBean) {
return clayyMapper.listPager(clayy);
}
注意:记得配置aop分页切面
==PagerAspect ==
package com.yzp.util;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
@Aspect
public class PagerAspect {
/**
* *:返回值类型
* *..:无限包
* *Service:以Service结尾接口名
* *Pager:以Pager方法
* 只要同时匹配上诉四个条件,就会被列为目标对象
* 上述配置要生效,代理注解 不能少
* @param args
* @return
* @throws Throwable
*/
@Around("execution(* *..*Biz.*Pager(..))")
public Object invoke(ProceedingJoinPoint args) throws Throwable {
Object[] params = args.getArgs();
PageBean pageBean = null;
for (Object param : params) {
if(param instanceof PageBean){
pageBean = (PageBean)param;
break;
}
}
if(pageBean != null && pageBean.isPagination())
PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
// 执行目标方法
Object list = args.proceed(params);
if(null != pageBean && pageBean.isPagination()){
PageInfo pageInfo = new PageInfo((List) list);
pageBean.setTotal(pageInfo.getTotal()+"");
}
return list;
}
}
package com.yzp.controller;
import com.yzp.biz.ClayyBiz;
import com.yzp.model.Clayy;
import com.yzp.model.dto.ClayyDto;
import com.yzp.util.PageBean;
import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import javax.validation.Valid;
import java.io.File;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author易泽鹏
* @site 16670388677
* @company
* @create 2022-08-17 19:51
*/
@Controller
@RequestMapping("/cly")
public class ClayycController {
@Autowired
private ClayyBiz clayyBiz;
//list->clylist
// tolist->重定向list->"redirect:/cly/list"
// toedit->跳转编辑页面->clyEdit
//clayy:以前是通过模型驱动接口封装,现在是直接在方法中接收参数即可
@RequestMapping("/list")
public String list(Clayy clayy, HttpServletRequest request){
PageBean pageBean = new PageBean();
pageBean.setRequest(request);
List lst = this.clayyBiz.listPager(clayy, pageBean);
request.setAttribute("lst",lst);
request.setAttribute("pageBean",pageBean);
return "clylist";
}
@RequestMapping("/toEdit")
public String toEdit(Clayy clayy, HttpServletRequest request){
Integer cid = clayy.getCid();
//传递的id代表了修改,没传代表新增
if(cid!=null){
List lst = this.clayyBiz.listPager(clayy, null);
request.setAttribute("b",lst.get(0));
}
return "clyedit";
}
@RequestMapping("/add")
public String add(Clayy clayy){
this.clayyBiz.insertSelective(clayy);
return "redirect:/cly/list";
}
/**
* @valid 是与实体类中的服务端校验 注解配合使用的
* @param clayy
* @param bindingResult 存放了所有违背 校验的错误信息
* @return
*/
@RequestMapping("/valiAdd")
public String valiAdd(@Valid Clayy clayy, BindingResult bindingResult,HttpServletRequest request){
if(bindingResult.hasErrors()){
Map msg = new HashMap();
// 违背规则
List fieldErrors = bindingResult.getFieldErrors();
for (FieldError fieldError : fieldErrors) {
//cid :cid不能为空
System.out.println(fieldError.getField() + ":" + fieldError.getDefaultMessage());
msg.put(fieldError.getField(),fieldError.getDefaultMessage());
}
request.setAttribute("msg",msg);
//如果出现了错误,应该将提示语显示在表单提示元素后方
return "clyedit";
}else {
this.clayyBiz.insertSelective(clayy);
}
return "redirect:/cly/list";
}
@RequestMapping("/del")
public String del(Clayy clayy){
this.clayyBiz.deleteByPrimaryKey(clayy.getCid());
return "redirect:/cly/list";
}
@RequestMapping("/edit")
public String edit(Clayy clayy){
this.clayyBiz.updateByPrimaryKeySelective(clayy);
return "redirect:/cly/list";
}
}
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://jsp.veryedu.cn" prefix="z"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
班级相册
ID
班级名称
指导老师
班级相册
操作
${b.cid }
${b.cname }
${b.cteacher }
修改
删除
上传图片
下载图片
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
班级的编辑界面
commons-fileupload
commons-fileupload
1.3.3
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2022/8/19
Time: 21:13
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
Title
建一个dto类
package com.yzp.model.dto;
import com.yzp.model.Clayy;
import org.springframework.web.multipart.MultipartFile;
/**
* @author易泽鹏
* @site 16670388677
* @company
* @create 2022-08-19 21:19
*/
public class ClayyDto extends Clayy {
//MultipartFile的属性名一定要跟form中的表单属性名一致
private MultipartFile picFile;
public MultipartFile getPicFile() {
return picFile;
}
public void setPicFile(MultipartFile picFile) {
this.picFile = picFile;
}
}
上传方法
@RequestMapping("/upload")
public String upload(ClayyDto clayyDto){
try {
//前台上传文件
MultipartFile picFile = clayyDto.getPicFile();
//实际应该配置resource.properties中
String diskPath="K:/temp/images/";//图片的存放地址
//http://localhost:8080/upload/mvc/0516.png
String requestPath="/upload/mvc/";//数据库保存的地址,也是我们访问的地址
//拿到上传文件的名字
String fileName = picFile.getOriginalFilename();//0516.png
FileUtils.copyInputStreamToFile(picFile.getInputStream(),new File(diskPath+fileName));
//将图片上传之后,并且将图片地址更新到数据库中
Clayy clayy = new Clayy();
clayy.setCid(clayyDto.getCid());
clayy.setPic(requestPath+fileName);
this.clayyBiz.updateByPrimaryKeySelective(clayy);
}catch (Exception e){
e.printStackTrace();
}
return "redirect:/cly/list";
}
下载图片
@RequestMapping("/download")
public ResponseEntity download(ClayyDto clayyDto){
try {
//1.点击下载传递文件的ID 通过文件的ID查询出文件的路径
Clayy clayy = this.clayyBiz.selectByPrimaryKey(clayyDto.getCid());
String pic = clayy.getPic();//一个数据库地址/upload/mvc
//实际应该配置resource.properties中
String diskPath="K:/temp/images/";//图片的存放地址
//http://localhost:8080/upload/mvc/0516.png
String requestPath="/upload/mvc/";//数据库保存的地址,也是我们访问的地址
//2.通过文件的请求地址 转换成文件存放的硬盘地址
String realPath = pic.replace(requestPath, diskPath);
String fileName = realPath.substring(realPath.lastIndexOf("/") + 1);
//3.将硬盘中文件下载下来-》固定代码
File file=new File(realPath);
HttpHeaders headers = new HttpHeaders();//http头信息
String downloadFileName = new String(fileName.getBytes("UTF-8"),"iso-8859-1");//设置编码
headers.setContentDispositionFormData("attachment", downloadFileName);
headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
//MediaType:互联网媒介类型 contentType:具体请求中的媒体类型信息
return new ResponseEntity(FileUtils.readFileToByteArray(file),headers, HttpStatus.OK);
}catch (Exception e){
e.printStackTrace();
}
return null;
}