Archetype Created Web ApplicationcontextConfigLocationclasspath:applicationContext.xmlorg.springframework.web.context.ContextLoaderListenerSpringMVCorg.springframework.web.servlet.DispatcherServletcontextConfigLocation/WEB-INF/springmvc-servlet.xml1trueSpringMVC/encodingFilterorg.springframework.web.filter.CharacterEncodingFiltertrueencodingUTF-8encodingFilter/*
1.4.逆向生成
将t_struts_class表逆向生成出Model、Mapper.xml、Mapper.java
工具类
StringUtils
package com.oyang.ssm.util;
public class StringUtils {
// 私有的构造方法，保护此类不能在外部实例化
private StringUtils() {
}
/**
* 如果字符串等于null或去空格后等于""，则返回true，否则返回false
*
* @param s
* @return
*/
public static boolean isBlank(String s) {
boolean b = false;
if (null == s || s.trim().equals("")) {
b = true;
}
return b;
}
/**
* 如果字符串不等于null或去空格后不等于""，则返回true，否则返回false
*
* @param s
* @return
*/
public static boolean isNotBlank(String s) {
return !isBlank(s);
}
}
分页工具类
PageBean
package com.oyang.ssm.util;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
/**
* 分页工具类
*
*/
public class PageBean {
private int page = 1;// 页码
private int rows = 10;// 页大小
private int total = 0;// 总记录数
private boolean pagination = true;// 是否分页
private String url; //保存上一次请求的URL
private Map paramMap = new HashMap<>();// 保存上一次请求的参数
/**
* 初始化pagebean的，保存上一次请求的重要参数
* @param req
*/
public void setRequest(HttpServletRequest req) {
// 1.1 需要保存上一次请求的URL
this.setUrl(req.getRequestURL().toString());
// 1.2 需要保存上一次请求的参数 bname、price
this.setParamMap(req.getParameterMap());
// 1.3 需要保存上一次请求的分页设置 pagination
this.setPagination(req.getParameter("pagination"));
// 1.4 需要保存上一次请求的展示条目数
this.setRows(req.getParameter("rows"));
// 1.5 初始化请求的页码 page
this.setPage(req.getParameter("page"));
}
public void setPage(String page) {
if(StringUtils.isNotBlank(page))
this.setPage(Integer.valueOf(page));
}
public void setRows(String rows) {
if(StringUtils.isNotBlank(rows))
this.setRows(Integer.valueOf(rows));
}
public void setPagination(String pagination) {
// 只有在前台jsp填写了pagination=false，才代表不分页
if(StringUtils.isNotBlank(pagination))
this.setPagination(!"false".equals(pagination));
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public Map getParamMap() {
return paramMap;
}
public void setParamMap(Map paramMap) {
this.paramMap = paramMap;
}
public PageBean() {
super();
}
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public int getRows() {
return rows;
}
public void setRows(int rows) {
this.rows = 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 pagination;
}
public void setPagination(boolean pagination) {
this.pagination = pagination;
}
/**
* 获得起始记录的下标
*
* @return
*/
public int getStartIndex() {
return (this.page - 1) * this.rows;
}
/**
* 最大页
* @return
*/
public int maxPage() {
// total % rows == 0 ? total / rows : total / rows +1
return this.total % this.rows == 0 ? this.total / this.rows : this.total / this.rows + 1;
}
/**
* 下一页
* @return
*/
public int nextPage() {
// 如果当前页小于最大页，那就下一页为当前页+1；如果不小于，说明当前页就是最大页，那就无需+1
return this.page < this.maxPage() ? this.page + 1 : this.page;
}
/**
* 上一页
* @return
*/
public int previousPage() {
return this.page > 1 ? this.page - 1 : this.page;
}
@Override
public String toString() {
return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination + "]";
}
}
cid, cname, cteacher, pic
delete from t_struts_class
where cid = #{cid,jdbcType=INTEGER}
insert into t_struts_class (cid, cname, cteacher,
pic)
values (#{cid,jdbcType=INTEGER}, #{cname,jdbcType=VARCHAR}, #{cteacher,jdbcType=VARCHAR},
#{pic,jdbcType=VARCHAR})
insert into t_struts_class
cid,
cname,
cteacher,
pic,
#{cid,jdbcType=INTEGER},
#{cname,jdbcType=VARCHAR},
#{cteacher,jdbcType=VARCHAR},
#{pic,jdbcType=VARCHAR},
update t_struts_class
cname = #{cname,jdbcType=VARCHAR},
cteacher = #{cteacher,jdbcType=VARCHAR},
pic = #{pic,jdbcType=VARCHAR},
where cid = #{cid,jdbcType=INTEGER}
update t_struts_class
set cname = #{cname,jdbcType=VARCHAR},
cteacher = #{cteacher,jdbcType=VARCHAR},
pic = #{pic,jdbcType=VARCHAR}
where cid = #{cid,jdbcType=INTEGER}
ClazzMapper
package com.oyang.ssm.mapper;
import com.oyang.ssm.model.Clazz;
import org.springframework.stereotype.Repository;
import java.util.List;
@Repository
public interface ClazzMapper {
int deleteByPrimaryKey(Integer cid);
int insert(Clazz record);
int insertSelective(Clazz record);
Clazz selectByPrimaryKey(Integer cid);
int updateByPrimaryKeySelective(Clazz record);
int updateByPrimaryKey(Clazz record);
List listPager(Clazz clazz);
}
Clazz
package com.oyang.ssm.model;
public class Clazz {
private Integer cid;
private String cname;
private String cteacher;
private String pic;
public Clazz(Integer cid, String cname, String cteacher, String pic) {
this.cid = cid;
this.cname = cname;
this.cteacher = cteacher;
this.pic = pic;
}
public Clazz() {
super();
}
public Integer getCid() {
return cid;
}
public void setCid(Integer cid) {
this.cid = cid;
}
public String getCname() {
return cname;
}
public void setCname(String cname) {
this.cname = cname;
}
public String getCteacher() {
return cteacher;
}
public void setCteacher(String cteacher) {
this.cteacher = cteacher;
}
public String getPic() {
return pic;
}
public void setPic(String pic) {
this.pic = pic;
}
}
ClazzBiz
package com.oyang.ssm.biz;
import com.oyang.ssm.model.Clazz;
import com.oyang.ssm.util.PageBean;
import java.util.List;
public interface ClazzBiz {
int deleteByPrimaryKey(Integer cid);
int insert(Clazz record);
int insertSelective(Clazz record);
Clazz selectByPrimaryKey(Integer cid);
int updateByPrimaryKeySelective(Clazz record);
int updateByPrimaryKey(Clazz record);
List listPager(Clazz clazz, PageBean pageBean);
}
ClazzBizImpl
package com.oyang.ssm.impl;
import com.oyang.ssm.biz.ClazzBiz;
import com.oyang.ssm.mapper.ClazzMapper;
import com.oyang.ssm.model.Clazz;
import com.oyang.ssm.util.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* @author oyang
* @site https://blog.csdn.net
* @qq 1828190940
* @create 2022-08-17 20:59
*/
@Service
public class ClazzBizImpl implements ClazzBiz {
@Autowired
private ClazzMapper clazzMapper;
@Override
public int deleteByPrimaryKey(Integer cid) {
return clazzMapper.deleteByPrimaryKey(cid);
}
@Override
public int insert(Clazz record) {
return clazzMapper.insert(record);
}
@Override
public int insertSelective(Clazz record) {
return clazzMapper.insertSelective(record);
}
@Override
public Clazz selectByPrimaryKey(Integer cid) {
return clazzMapper.selectByPrimaryKey(cid);
}
@Override
public int updateByPrimaryKeySelective(Clazz record) {
return clazzMapper.updateByPrimaryKeySelective(record);
}
@Override
public int updateByPrimaryKey(Clazz record) {
return clazzMapper.updateByPrimaryKey(record);
}
@Override
public List listPager(Clazz clazz, PageBean pageBean) {
return clazzMapper.listPager(clazz);
}
}
参考：http://blog.csdn.net/qingfeilee/article/details/7052736
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