简单易学的springmvc增删改查
springmvc入门什么是springMVC?Spring Web MVC是一种基于Java的实现了MVC设计模式的、请求驱动类型的、轻量级Web框架。二、 SpringMVC处理请求的流程a、首先用户发送请求–>DispatherServletb、 DispatcherServlet–>HandlerMappingc、 DispatcherServlet–>Han...
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springmvc入门
什么是springMVC?
Spring Web MVC是一种基于Java的实现了MVC设计模式的、请求驱动类型的、轻量级Web框架。
二、 SpringMVC处理请求的流程
a、首先用户发送请求–>DispatherServlet
b、 DispatcherServlet–>HandlerMapping
c、 DispatcherServlet–>HandlerAdapter
d、HandlerAdapter–>处理器功能处理方法的调用
e、 ModelAndView的逻辑视图名–>ViewRecolver
f、 View–>渲染
g、 返回控制权给DispatcherServlet，由DispatcherServlet返回呼应给用户，流程结束
三、 SpringMVC核心开发步骤
a、 DispatcherServlet在web.xml中的部署描述，从而拦截请求到springMVC
b、 HandlerMapping的配置，从而将请求映射到处理器
c、 HandlerAdapter的配置，从而支持多种类型的处理器
d、 处理器(页面控制器)的配置，从而刊行功能处理
e、 ViewResolver的配置，从而将逻辑视图名解析为具体的视图技术
四、 SpringMVC的组件
a、 前端控制器(DispatcherServlet)
b、请求到处理器映射(HandlerMapping)
c、 处理器适配器(HandlerAdapter)
d、视图解析器(ViewResolver)
e、处理器或页面控制器(Controller)
f、 验证器(Validator)
g、 命令对象(Command 请求参数绑定到的对象就叫命令对象)
h、 表单对象(Form Object提供给表单展示和提交到的对象就叫表单对象)
五、配置SpringMVC
所需pom依赖
<?xml version="1.0" encoding="UTF-8"?>
<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.wsy</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>ssm Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.plugin.version>3.7.0</maven.compiler.plugin.version>
<!--添加jar包依赖-->
<!--1.spring 5.0.2.RELEASE相关-->
<spring.version>5.0.2.RELEASE</spring.version>
<!--2.mybatis相关-->
<mybatis.version>3.4.5</mybatis.version>
<!--mysql-->
<mysql.version>5.1.44</mysql.version>
<!--pagehelper分页jar依赖-->
<pagehelper.version>5.1.2</pagehelper.version>
<!--mybatis与spring集成jar依赖-->
<mybatis.spring.version>1.3.1</mybatis.spring.version>
<!--3.dbcp2连接池相关 druid-->
<commons.dbcp2.version>2.1.1</commons.dbcp2.version>
<commons.pool2.version>2.4.3</commons.pool2.version>
<!--4.log日志相关-->
<log4j2.version>2.9.1</log4j2.version>
<!--5.其他-->
<junit.version>4.12</junit.version>
<servlet.version>4.0.0</servlet.version>
<lombok.version>1.18.2</lombok.version>
<!-- log4j2日志配置相关依赖 -->
<log4j2.version>2.9.1</log4j2.version>
<log4j2.disruptor.version>3.2.0</log4j2.disruptor.version>
<slf4j.version>1.7.13</slf4j.version>
<!-- redis与spring的整合依赖 -->
<redis.version>2.9.0</redis.version>
<redis.spring.version>1.7.1.RELEASE</redis.spring.version>
<!-- jackson -->
<jackson.version>2.9.3</jackson.version>
<tomcat-jsp-api.version>8.0.47</tomcat-jsp-api.version>
</properties>
<dependencies>
<!--1.spring相关-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!--2.mybatis相关-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!--pagehelper分页插件jar包依赖-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>${pagehelper.version}</version>
</dependency>
<!--mybatis与spring集成jar包依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!--3.dbcp2连接池相关-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>${commons.dbcp2.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>${commons.pool2.version}</version>
</dependency>
<!--4.log日志相关依赖-->
<!--核心log4j2jar包-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j2.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j2.version}</version>
</dependency>
<!--web工程需要包含log4j-web，非web工程不需要-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-web</artifactId>
<version>${log4j2.version}</version>
</dependency>
<!--5.其他-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<!--mybatis与ehcache整合-->
<dependency>
<groupId>org.mybatis.caches</groupId>
<artifactId>mybatis-ehcache</artifactId>
<version>1.1.0</version>
</dependency>
<!--ehcache依赖-->
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>2.10.0</version>
</dependency>
<!-- log4j2日志相关依赖 -->
<!-- log配置：Log4j2 + Slf4j -->
<!-- slf4j核心包-->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${slf4j.version}</version>
<scope>runtime</scope>
</dependency>
<!--核心log4j2jar包-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j2.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j2.version}</version>
</dependency>
<!--用于与slf4j保持桥接-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>${log4j2.version}</version>
</dependency>
<!--web工程需要包含log4j-web，非web工程不需要-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-web</artifactId>
<version>${log4j2.version}</version>
<scope>runtime</scope>
</dependency>
<!--需要使用log4j2的AsyncLogger需要包含disruptor-->
<dependency>
<groupId>com.lmax</groupId>
<artifactId>disruptor</artifactId>
<version>${log4j2.disruptor.version}</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>${redis.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>${redis.spring.version}</version>
</dependency>
<!-- jackson -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jsp-api</artifactId>
<version>${tomcat-jsp-api.version}</version>
</dependency>
</dependencies>
<build>
<finalName>SSM</finalName>
<resources>
<!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题-->
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题-->
<resource>
<directory>src/main/resources</directory>
<includes>
<include>*.properties</include>
<include>*.xml</include>
</includes>
</resource>
</resources>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven.compiler.plugin.version}</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<dependencies>
<!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
</dependencies>
<configuration>
<overwrite>true</overwrite>
</configuration>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
然后在WEB-INF下面导入springmvc-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 通过context:component-scan元素扫描指定包下的控制器-->
<!--1) 扫描com.javaxl.zf及子子孙孙包下的控制器(扫描范围过大，耗时)-->
<aop:aspectj-autoproxy/>
<context:component-scan base-package="com.wsy"/>
<!--2) 此标签默认注册DefaultAnnotationHandlerMapping和AnnotationMethodHandlerAdapter -->
<!--两个bean，这两个bean是spring MVC为@Controllers分发请求所必须的。并提供了数据绑定支持，-->
<!--@NumberFormatannotation支持，@DateTimeFormat支持，@Valid支持，读写XML的支持（JAXB），读写JSON的支持（Jackson）-->
<mvc:annotation-driven></mvc:annotation-driven>
<!--3) ViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- viewClass需要在pom中引入两个包：standard.jar and jstl.jar -->
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView"></property>
<property name="prefix" value="/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!--4) 单独处理图片、样式、js等资源 -->
<!--<mvc:resources location="/css/" mapping="/css/**"/>-->
<mvc:resources location="/statis/" mapping="/statis/**"/>
<!--<mvc:resources location="/js/" mapping="/js/**"/>-->
</beans>
然后我们把web.xml配置修改好
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<display-name>Archetype Created Web Application</display-name>
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- 读取Spring上下文的监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Spring和web项目集成end -->
<!-- 防止Spring内存溢出监听器 -->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!-- 中文乱码处理 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!--web.xml 3.0的新特性，是否支持异步-->
<async-supported>true</async-supported>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- Spring MVC servlet -->
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--此参数可以不配置，默认值为：/WEB-INF/springmvc-servlet.xml-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springmvc-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<!--web.xml 3.0的新特性，是否支持异步-->
<async-supported>true</async-supported>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
SpringMVC关于结果集的五种处理
package com.wsy.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpServletRequest;
/**
* @author干的漂亮
* @site www.wangmage.com
* @company 干得漂亮公司
* @create 2019 - 09-28 11:28
*/
/**
* 关于结果集处理分五种情况
* 1、转发到页面(webapp下)
* 2、转发到action请求
* 3、重定向页面（webapp下）
* 4、重定向到action
* 5、转发到web-inf下的页面
*/
@Controller
public class Helllocontroller {
@RequestMapping("hello")
private String Hello(HttpServletRequest request){
request.setAttribute("msg","转发到页面");
return "hello";
}
/**
* 重定向到action中
* @param request
* @return
*/
@RequestMapping("hello2")
private String redirectPage(HttpServletRequest request){
request.setAttribute("msg","重定向到Action");
return "redirect:hello";
}
/**
* 重定向到页面
* @param request
* @return
*/
@RequestMapping("hello3")
private String redirectPage2(HttpServletRequest request){
Object msg = request.getAttribute("msg");
return "redirect:/hello.jsp";
}
/**
* 转发到action
* @param request
* @return
*/
@RequestMapping("hello4")
private String forwardAction(HttpServletRequest request){
request.setAttribute("msg","转发到action");
return "forward:hello3";
}
@RequestMapping("hello5")
private String forwardwebinf(HttpServletRequest request){
request.setAttribute("msg","转发访问安全页面");
return "wsy";
}
}
转发到安全目录需要在spring-mvc.xml添加
<property name="prefix" value="/WEB-INF/"/><!--这是访问安全目录的配法-->
访问到项目里面的静态资源文件的话需要spring-mvc.xml里面添加
<mvc:resources location="/css/" mapping="/css/**"/>
<mvc:resources location="/static/" mapping="/static/**"/>
<mvc:resources location="/js/" mapping="/js/**"/>
SpringMVC增删改查案例
在BookMapper添加
List<Map> listPage(Book book);
BookMapper.xml
<select id="listPage" resultType="java.util.Map" parameterType="com.wsy.model.Book">
select * from t_mvc_book
<where>
<if test="null != bname and bname != '' ">
and bname like #{bname}
</if>
</where>
</select>
BookService
List<Map>listPager(Book book, PageBean pageBean);
BookServiceImpl
@Override
public List<Map>
listPager(Book book, PageBean pageBean) {
return bookMapper.listPage(book);
}
工具类PageBean
package com.wsy.util;
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<String,String[]> 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<String, String[]> getMap() {
return map;
}
public void setMap(Map<String, String[]> 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
package com.wsy.util;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyTagSupport;
import java.io.IOException;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
public class PageTag extends BodyTagSupport {
private static final long serialVersionUID = 1L;
private PageBean pageBean;
public PageBean getPageBean() {
return pageBean;
}
public void setPageBean(PageBean pageBean) {
this.pageBean = pageBean;
}
@Override
public int doStartTag() throws JspException {
JspWriter out = pageContext.getOut();
try {
out.print(toHTML());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return super.doStartTag();
}
private String toHTML() {
StringBuffer sb = new StringBuffer();
/*
* 拼接向后台提交数据的form表单
* 注意：拼接的form表单中的page参数是变化的，所以不需要保留上一次请求的值
*/
sb.append("<form id='pageBeanForm' action='"+pageBean.getUrl()+"' method='post'>");
sb.append("<input type='hidden' name='page'>");
Map<String, String[]> parameterMap = pageBean.getMap();
if(parameterMap != null && parameterMap.size() > 0) {
Set<Entry<String, String[]>> entrySet = parameterMap.entrySet();
for (Entry<String, String[]> entry : entrySet) {
if(!"page".equals(entry.getKey())) {
String[] values = entry.getValue();
for (String val : values) {
sb.append("<input type='hidden' name='"+entry.getKey()+"' value='"+val+"'>");
}
}
}
}
sb.append("</form>");
/*
* 展示的分页条
*/
sb.append("<div style='text-align: right; font-size: 12px;'>");
sb.append("每页"+pageBean.getRows()+"条，共"+pageBean.getTotal()+"条，第"+pageBean.getPage()+"页，共"+pageBean.getMaxPage()+"页 <a href='javascript:gotoPage(1)'>首页</a> <a");
sb.append(" href='javascript:gotoPage("+pageBean.getPreivousPage()+")'>上一页</a> <a");
sb.append(" href='javascript:gotoPage("+pageBean.getNextPage()+")'>下一页</a> <a");
sb.append(" href='javascript:gotoPage("+pageBean.getMaxPage()+")'>尾页</a> <input type='text'");
sb.append(" id='skipPage'");
sb.append(" style='text-align: center; font-size: 12px; width: 50px;'> <a");
sb.append(" href='javascript:skipPage()'>Go</a>");
sb.append("</div>");
/*
* 给分页条添加与后台交互的js代码
*/
sb.append("<script type='text/javascript'>");
sb.append(" function gotoPage(page) {");
sb.append(" document.getElementById('pageBeanForm').page.value = page;");
sb.append(" document.getElementById('pageBeanForm').submit();");
sb.append(" }");
sb.append(" function skipPage() {");
sb.append(" var page = document.getElementById('skipPage').value;");
sb.append(" if(!page || isNaN(page) || parseInt(page)<1 || parseInt(page)>"+pageBean.getMaxPage()+"){");
sb.append(" alert('请输入1~N的数字');");
sb.append(" return;");
sb.append(" }");
sb.append(" gotoPage(page);");
sb.append(" }");
sb.append("</script>");
return sb.toString();
}
}
Bookcontroller
package com.wsy.controller;
import com.wsy.model.Book;
import com.wsy.service.BookService;
import com.wsy.util.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
import java.util.Map;
/**
* @author干的漂亮
* @site www.wangmage.com
* @company 干得漂亮公司
* @create 2019 - 09-28 11:28
*/
@Controller
@RequestMapping("/book")
public class Bookcontroller {
@Autowired
private BookService bookService;
@RequestMapping("/list")
public String list(Book book, HttpServletRequest request){
PageBean pageBean = new PageBean();
pageBean.setRequest(request);
List<Map> list = this.bookService.listPager(book,pageBean);
request.setAttribute("bookList",list);
request.setAttribute("pageBean",pageBean);
return "bookList";
}
@RequestMapping("/preSave")
public String preSave(Book book, HttpServletRequest request){
if(book.getBid() != null){
Book b = this.bookService.selectByPrimaryKey(book.getBid());
request.setAttribute("b",b);
}
return "bookEdit";
}
@RequestMapping("/add")
public String add(Book book, HttpServletRequest request){
this.bookService.insert(book);
return "redirect:/book/list";
}
@RequestMapping("/del/{bid}")
public String del(@PathVariable(value = "bid") Integer bid, HttpServletRequest request){
this.bookService.deleteByPrimaryKey(bid);
return "redirect:/book/list";
}
@RequestMapping("/edit")
public String edit(Book book, HttpServletRequest request){
this.bookService.updateByPrimaryKeySelective(book);
return "redirect:/book/list";
}
}
bookList.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="/zking" prefix="z" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
function add(){
// window.location.href = "bookEdit.jsp";
window.location.href="${pageContext.request.contextPath}/book/preSave";
}
function update(bid){
window.location.href = "${pageContext.request.contextPath}/book/preSave?bid="+bid;
}
function del(bid){
window.location.href = "${pageContext.request.contextPath}/book/del/"+bid;
}
</script>
</head>
<body>
<form action="${pageContext.request.contextPath}/book/list"
method="post">
书名：<input type="text" name="bname"> <input type="submit" value="确定">
</form>
<button onclick="add();">新增</button>
<table border="1" width="100%">
<tr>
<td>编号</td>
<td>名称</td>
<td>价格</td>
<td>操作</td>
</tr>
<c:forEach items="${bookList }" var="b">
<tr>
<td>${b.bid }</td>
<td>${b.bname }</td>
<td>${b.price }</td>
<td>
<button onclick="update(${b.bid });">修改</button>
<button onclick="del(${b.bid });">删除</button>
</td>
</tr>
</c:forEach>
</table>
<z:page pageBean="${pageBean }"></z:page>
</body>
</html>
bookEdit.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
function doSubmit(bid){
var bookForm = document.getElementById("bookForm");
if(bid){
//修改时候执行
bookForm.action = '${pageContext.request.contextPath}/book/edit';
}else{
//新增时候执行
bookForm.action = '${pageContext.request.contextPath}/book/add';
}
bookForm.submit();
}
</script>
</head>
<body>
<form id="bookForm" action="" method="post">
bid:<input type="text" name="bid" value="${b.bid }"><br>
bname:<input type="text" name="bname" value="${b.bname }"><br>
price:<input type="text" name="price" value="${b.price }"><br>
<input type="submit" value="提交" onclick="doSubmit('${b.bid }')"><br>
</form>
</body>
</html>
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