SpringMVC之CRUD------增删改查
目录
前言
配置文件
pom.xml文件
web.xml文件
spring-context.xml
spring-mvc.xml
spring-MyBatis.xml
jdbc.properties数据库配置文件
generatorConfig.xml
log4j2日志文件
后台
PageBaen.java
PageTag.java
切面类
biz层
定义一个接口
再写一个实现类
web层
前台
list.jsp
edit.jsp
测试结果
前言
今天给大家带来的是SpringMVC的增删改查操作，也是SpringMVC中重要的部分
配置文件
pom.xml文件
4.0.0
org.example
xiaoxuzyssm
1.0-SNAPSHOT
war
xiaoxuzyssm 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
3.2.0
1.7.13
4.12
4.0.0
1.18.2
1.1.0
2.10.0
2.9.0
1.7.1.RELEASE
2.9.3
1.2
1.1.2
8.0.47
1.3.3
5.0.2.Final
1.3.2
org.springframework
spring-core
${spring.version}
org.springframework
spring-beans
${spring.version}
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.springframework
spring-context-support
${spring.version}
org.mybatis.caches
mybatis-ehcache
${mybatis.ehcache.version}
net.sf.ehcache
ehcache
${ehcache.version}
redis.clients
jedis
${redis.version}
org.springframework.data
spring-data-redis
${redis.spring.version}
com.fasterxml.jackson.core
jackson-databind
${jackson.version}
com.fasterxml.jackson.core
jackson-core
${jackson.version}
com.fasterxml.jackson.core
jackson-annotations
${jackson.version}
org.apache.commons
commons-dbcp2
${commons.dbcp2.version}
commons-pool2
org.apache.commons
org.apache.commons
commons-pool2
${commons.pool2.version}
org.springframework
spring-webmvc
${spring.version}
org.slf4j
slf4j-api
${slf4j.version}
org.slf4j
jcl-over-slf4j
${slf4j.version}
runtime
org.apache.logging.log4j
log4j-api
${log4j2.version}
org.apache.logging.log4j
log4j-core
${log4j2.version}
org.apache.logging.log4j
log4j-slf4j-impl
${log4j2.version}
org.apache.logging.log4j
log4j-web
${log4j2.version}
runtime
com.lmax
disruptor
${log4j2.disruptor.version}
junit
junit
${junit.version}
test
javax.servlet
javax.servlet-api
${servlet.version}
provided
org.projectlombok
lombok
${lombok.version}
provided
jstl
jstl
${jstl.version}
taglibs
standard
${standard.version}
org.apache.tomcat
tomcat-jsp-api
${tomcat-jsp-api.version}
commons-fileupload
commons-fileupload
${commons-fileupload.version}
org.hibernate
hibernate-validator
${hibernate-validator.version}
org.apache.shiro
shiro-core
${shiro.version}
org.apache.shiro
shiro-web
${shiro.version}
org.apache.shiro
shiro-spring
${shiro.version}
xiaoxuzyssm
src/main/java
**/*.xml
src/main/resources
*.properties
*.xml
org.apache.maven.plugins
maven-compiler-plugin
${maven.compiler.plugin.version}
${maven.compiler.source}
${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
web.xml文件
Archetype Created Web Application
contextConfigLocation
classpath:spring-context.xml
org.springframework.web.context.ContextLoaderListener
encodingFilter
org.springframework.web.filter.CharacterEncodingFilter
true
encoding
UTF-8
encodingFilter
/*
SpringMVC
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
classpath:spring-mvc.xml
1
true
SpringMVC
/
spring-context.xml
spring-mvc.xml
spring-MyBatis.xml
helperDialect=mysql
jdbc.properties数据库配置文件
这里咱们链接自己的数据库
generatorConfig.xml
log4j2日志文件
/root/workspace/lucenedemo/logs
/root/workspace/lucenedemo/logs/error
/root/workspace/lucenedemo/logs/warn
%d{yyyy-MM-dd HH:mm:ss.SSS} [%t-%L] %-5level %logger{36} - %msg%n
代码生成完之后，就代表我们已经配置好了！！！
后台
接下来写我们需要用到的工具类
PageBaen.java
package com.xiaoxu.utis;
import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import java.util.Map;
public class PageBean implements Serializable {
private static final long serialVersionUID = 2422581023658455731L;
//页码
private int page=1;
//每页显示记录数
private int rows=10;
//总记录数
private int total=0;
//是否分页
private boolean isPagination=true;
//上一次的请求路径
private String url;
//获取所有的请求参数
private Map map;
public PageBean() {
super();
}
//设置请求参数
public void setRequest(HttpServletRequest req) {
String page=req.getParameter("page");
String rows=req.getParameter("rows");
String pagination=req.getParameter("pagination");
this.setPage(page);
this.setRows(rows);
this.setPagination(pagination);
this.url=req.getContextPath()+req.getServletPath();
this.map=req.getParameterMap();
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public Map getMap() {
return map;
}
public void setMap(Map map) {
this.map = map;
}
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public void setPage(String page) {
if(null!=page&&!"".equals(page.trim()))
this.page = Integer.parseInt(page);
}
public int getRows() {
return rows;
}
public void setRows(int rows) {
this.rows = rows;
}
public void setRows(String rows) {
if(null!=rows&&!"".equals(rows.trim()))
this.rows = Integer.parseInt(rows);
}
public int getTotal() {
return total;
}
public void setTotal(int total) {
this.total = total;
}
public void setTotal(String total) {
this.total = Integer.parseInt(total);
}
public boolean isPagination() {
return isPagination;
}
public void setPagination(boolean isPagination) {
this.isPagination = isPagination;
}
public void setPagination(String isPagination) {
if(null!=isPagination&&!"".equals(isPagination.trim()))
this.isPagination = Boolean.parseBoolean(isPagination);
}
/**
* 获取分页起始标记位置
* @return
*/
public int getStartIndex() {
//(当前页码-1)*显示记录数
return (this.getPage()-1)*this.rows;
}
/**
* 末页
* @return
*/
public int getMaxPage() {
int totalpage=this.total/this.rows;
if(this.total%this.rows!=0)
totalpage++;
return totalpage;
}
/**
* 下一页
* @return
*/
public int getNextPage() {
int nextPage=this.page+1;
if(this.page>=this.getMaxPage())
nextPage=this.getMaxPage();
return nextPage;
}
/**
* 上一页
* @return
*/
public int getPreivousPage() {
int previousPage=this.page-1;
if(previousPage<1)
previousPage=1;
return previousPage;
}
@Override
public String toString() {
return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", isPagination=" + isPagination
+ "]";
}
}
PageTag.java
package com.xiaoxu.tag;
import com.xiaoxu.utis.PageBean;
import java.io.IOException;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyTagSupport;
public class PageTag extends BodyTagSupport{
private PageBean pageBean;// 包含了所有分页相关的元素
public PageBean getPageBean() {
return pageBean;
}
public void setPageBean(PageBean pageBean) {
this.pageBean = pageBean;
}
@Override
public int doStartTag() throws JspException {
// 没有标签体，要输出内容
JspWriter out = pageContext.getOut();
try {
out.print(toHTML());
} catch (IOException e) {
e.printStackTrace();
}
return super.doStartTag();
}
private String toHTML() {
StringBuffer sb = new StringBuffer();
// 隐藏的form表单---这个就是上一次请求下次重新发的奥义所在
// 上一次请求的URL
sb.append("");
// 分页条
sb.append("");
// 分页执行的JS代码
sb.append("");
return sb.toString();
}
}
切面类
package com.xiaoxu.aspect;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.xiaoxu.utis.PageBean;
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;
/**
* @author小徐
* @site www.veryedu.cn
* @company xu集团
* @create 2023-08-25 17:24
*
* * *..*Service.*Pager(..)
* *:任意返回值类型
* *..:任意包，不限层级
* *service：以serveice结尾的类/接口
* *page：以page结尾的方法
* ..：任意参数
* 符合上述条件，即为目标类或者目标方法
*/
@Aspect//代表当前类为切面类
@Component//代表当前类交给spring进行管理
public class PagerAspect {
@Around("execution(* *..*Biz.*Page(..))")
public Object invoke(ProceedingJoinPoint args) throws Throwable {
PageBean pageBean = null;
Object[] params = args.getArgs();
for (Object param : params) {
if(param instanceof PageBean){
pageBean = (PageBean)param;
break;
}
}
if(pageBean != null && pageBean.isPagination())
PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
Object list = args.proceed(params);
if(null != pageBean && pageBean.isPagination()){
PageInfo pageInfo = new PageInfo((List) list);
pageBean.setTotal(pageInfo.getTotal()+"");
}
return list;
}
}
biz层
定义一个接口
再写一个实现类
package com.xiaoxu.impl;
import com.xiaoxu.biz.BookxxBiz;
import com.xiaoxu.mapper.BookxxMapper;
import com.xiaoxu.model.Bookxx;
import com.xiaoxu.utis.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* @author小徐
* @site www.veryedu.cn
* @company xu集团
* @create 2023-09-07 18:05
*/
@Service
public class BookxxBizImpl implements BookxxBiz {
@Autowired
private BookxxMapper bookxxMapper;
@Override
public int deleteByPrimaryKey(Integer book_id) {
return bookxxMapper.deleteByPrimaryKey(book_id);
}
@Override
public int insert(Bookxx record) {
return bookxxMapper.insert(record);
}
@Override
public int insertSelective(Bookxx record) {
return bookxxMapper.insertSelective(record);
}
@Override
public Bookxx selectByPrimaryKey(Integer book_id) {
return bookxxMapper.selectByPrimaryKey(book_id);
}
@Override
public int updateByPrimaryKeySelective(Bookxx record) {
return bookxxMapper.updateByPrimaryKeySelective(record);
}
@Override
public int updateByPrimaryKey(Bookxx record) {
return bookxxMapper.updateByPrimaryKey(record);
}
@Override
public List selectPage(Bookxx bookxx, PageBean pageBean) {
return bookxxMapper.selectPage(bookxx);
}
}
web层
package com.xiaoxu.web;
import com.xiaoxu.biz.BookxxBiz;
import com.xiaoxu.model.Bookxx;
import com.xiaoxu.utis.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
/**
* @author小徐
* @site www.veryedu.cn
* @company xu集团
* @create 2023-09-08 2:44
*/
@Controller
@RequestMapping("/clz")
public class BookxxController {
@Autowired
private BookxxBiz bookxxBiz;
//增
@RequestMapping("/add")
public String add(Bookxx bookxx){
int i = bookxxBiz.insertSelective(bookxx);
return "redirect:list";
}
//删
@RequestMapping("/del/{book_id}")
public String del(@PathVariable("book_id") Integer book_id){
bookxxBiz.deleteByPrimaryKey(book_id);
return "redirect:/clz/list";
}
//改
@RequestMapping("/edit")
public String edit(Bookxx bookxx){
bookxxBiz.updateByPrimaryKeySelective(bookxx);
return "redirect:list";
}
//查
@RequestMapping("/list")
public String list(Bookxx bookxx,
HttpServletRequest request) {
PageBean pageBean = new PageBean();
pageBean.setRequest(request);
List bookxxes = bookxxBiz.selectPage(bookxx, pageBean);
request.setAttribute("list", bookxxes);
request.setAttribute("pageBean", pageBean);
return "clz/list";
}
//数据回显
@RequestMapping("/preSave")
public String preSave(Bookxx bookxx, Model model){
if (bookxx != null && bookxx.getBook_id() != null && bookxx.getBook_id() != 0){
Bookxx book = bookxxBiz.selectByPrimaryKey(bookxx.getBook_id());
model.addAttribute("book",book);
}
return "clz/edit";
}
} 前台
list.jsp
<%@ 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"%>
博客列表
书籍编号
书籍名字
价格
操作
${b.book_id }
${b.book_name }
${b.price }
修改
删除
edit.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
Title
编辑界面
测试结果
