maven中ssm通用分页

package com.plugin;

import java.lang.reflect.Field;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.List;

import java.util.Properties;

import javax.xml.bind.PropertyException;

import org.apache.ibatis.executor.ErrorContext;

import org.apache.ibatis.executor.ExecutorException;

import org.apache.ibatis.executor.statement.BaseStatementHandler;

import org.apache.ibatis.executor.statement.RoutingStatementHandler;

import org.apache.ibatis.executor.statement.StatementHandler;

import org.apache.ibatis.mapping.BoundSql;

import org.apache.ibatis.mapping.MappedStatement;

import org.apache.ibatis.mapping.ParameterMapping;

import org.apache.ibatis.mapping.ParameterMode;

import org.apache.ibatis.plugin.Interceptor;

import org.apache.ibatis.plugin.Intercepts;

import org.apache.ibatis.plugin.Invocation;

import org.apache.ibatis.plugin.Plugin;

import org.apache.ibatis.plugin.Signature;

import org.apache.ibatis.reflection.MetaObject;

import org.apache.ibatis.reflection.property.PropertyTokenizer;

import org.apache.ibatis.scripting.xmltags.ForEachSqlNode;

import org.apache.ibatis.session.Configuration;

import org.apache.ibatis.type.TypeHandler;

import org.apache.ibatis.type.TypeHandlerRegistry;

import com.domain.Page;

import com.util.ReflectHelper;

import com.util.Tools;

/**

*

* 类名称：PagePlugin.java

* 类描述：

* @author FH

* 作者单位：

* 联系方式：qq313596790

* 创建时间：2014年7月1日

* @version 1.0

*/

@Intercepts({@Signature(type=StatementHandler.class,method="prepare",args={Connection.class})})

public class PagePlugin implements Interceptor {

private static String dialect = "";//数据库方言

private static String pageSqlId = ""; //mapper.xml中需要拦截的ID(正则匹配)

public Object intercept(Invocation ivk) throws Throwable {

// TODO Auto-generated method stub

if(ivk.getTarget() instanceof RoutingStatementHandler){

RoutingStatementHandler statementHandler = (RoutingStatementHandler)ivk.getTarget();

BaseStatementHandler delegate = (BaseStatementHandler) ReflectHelper.getValueByFieldName(statementHandler, "delegate");

MappedStatement mappedStatement = (MappedStatement) ReflectHelper.getValueByFieldName(delegate, "mappedStatement");

if(mappedStatement.getId().matches(pageSqlId)){ //拦截需要分页的SQL

BoundSql boundSql = delegate.getBoundSql();

Object parameterObject = boundSql.getParameterObject();//分页SQL<select>中parameterType属性对应的实体参数，即Mapper接口中执行分页方法的参数,该参数不得为空

if(parameterObject==null){

throw new NullPointerException("parameterObject尚未实例化！");

}else{

Connection connection = (Connection) ivk.getArgs()[0];

String sql = boundSql.getSql();

//String countSql = "select count(0) from (" + sql+ ") as tmp_count"; //记录统计

String countSql = "select count(0) from (" + sql+ ") tmp_count"; //记录统计 == oracle 加 as 报错(SQL command not properly ended)

PreparedStatement countStmt = connection.prepareStatement(countSql);

BoundSql countBS = new BoundSql(mappedStatement.getConfiguration(),countSql,boundSql.getParameterMappings(),parameterObject);

setParameters(countStmt,mappedStatement,countBS,parameterObject);

ResultSet rs = countStmt.executeQuery();

int count = 0;

if (rs.next()) {

count = rs.getInt(1);

}

rs.close();

countStmt.close();

//System.out.println(count);

Page page = null;

if(parameterObject instanceof Page){//参数就是Page实体

page = (Page) parameterObject;

page.setEntityOrField(true);

page.setTotalResult(count);

}else{
//参数为某个实体，该实体拥有Page属性

Field pageField = ReflectHelper.getFieldByFieldName(parameterObject,"page");

if(pageField!=null){

page = (Page) ReflectHelper.getValueByFieldName(parameterObject,"page");

if(page==null)

page = new Page();

page.setEntityOrField(false);

page.setTotalResult(count);

ReflectHelper.setValueByFieldName(parameterObject,"page", page); //通过反射，对实体对象设置分页对象

}else{

throw new NoSuchFieldException(parameterObject.getClass().getName()+"不存在 page 属性！");

}

}

String pageSql = generatePageSql(sql,page);

ReflectHelper.setValueByFieldName(boundSql, "sql", pageSql); //将分页sql语句反射回BoundSql.

}

}

}

return ivk.proceed();

}

/**

* 对SQL参数(?)设值,参考org.apache.ibatis.executor.parameter.DefaultParameterHandler

* @param ps

* @param mappedStatement

* @param boundSql

* @param parameterObject

* @throws SQLException

*/

private void setParameters(PreparedStatement ps,MappedStatement mappedStatement,BoundSql boundSql,Object parameterObject) throws SQLException {

ErrorContext.instance().activity("setting parameters").object(mappedStatement.getParameterMap().getId());

List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();

if (parameterMappings != null) {

Configuration configuration = mappedStatement.getConfiguration();

TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();

MetaObject metaObject = parameterObject == null ? null: configuration.newMetaObject(parameterObject);

for (int i = 0; i < parameterMappings.size(); i++) {

ParameterMapping parameterMapping = parameterMappings.get(i);

if (parameterMapping.getMode() != ParameterMode.OUT) {

Object value;

String propertyName = parameterMapping.getProperty();

PropertyTokenizer prop = new PropertyTokenizer(propertyName);

if (parameterObject == null) {

value = null;

} else if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {

value = parameterObject;

} else if (boundSql.hasAdditionalParameter(propertyName)) {

value = boundSql.getAdditionalParameter(propertyName);

} else if (propertyName.startsWith(ForEachSqlNode.ITEM_PREFIX)&& boundSql.hasAdditionalParameter(prop.getName())) {

value = boundSql.getAdditionalParameter(prop.getName());

if (value != null) {

value = configuration.newMetaObject(value).getValue(propertyName.substring(prop.getName().length()));

}

} else {

value = metaObject == null ? null : metaObject.getValue(propertyName);

}

TypeHandler typeHandler = parameterMapping.getTypeHandler();

if (typeHandler == null) {

throw new ExecutorException("There was no TypeHandler found for parameter "+ propertyName + " of statement "+ mappedStatement.getId());

}

typeHandler.setParameter(ps, i + 1, value, parameterMapping.getJdbcType());

}

}

}

}

/**

* 根据数据库方言，生成特定的分页sql

* @param sql

* @param page

* @return

*/

private String generatePageSql(String sql,Page page){

if(page!=null && Tools.notEmpty(dialect)){

StringBuffer pageSql = new StringBuffer();

if("mysql".equals(dialect)){

pageSql.append(sql);

pageSql.append(" limit "+page.getCurrentResult()+","+page.getShowCount());

}else if("oracle".equals(dialect)){

pageSql.append("select * from (select tmp_tb.*,ROWNUM row_id from (");

pageSql.append(sql);

//pageSql.append(") as tmp_tb where ROWNUM<=");

pageSql.append(") tmp_tb where ROWNUM<=");

pageSql.append(page.getCurrentResult()+page.getShowCount());

pageSql.append(") where row_id>");

pageSql.append(page.getCurrentResult());

}

return pageSql.toString();

}else{

return sql;

}

}

public Object plugin(Object arg0) {

// TODO Auto-generated method stub

return Plugin.wrap(arg0, this);

}

public void setProperties(Properties p) {

dialect = p.getProperty("dialect");

if (Tools.isEmpty(dialect)) {

try {

throw new PropertyException("dialect property is not found!");

} catch (PropertyException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

pageSqlId = p.getProperty("pageSqlId");

if (Tools.isEmpty(pageSqlId)) {

try {

throw new PropertyException("pageSqlId property is not found!");

} catch (PropertyException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

package com.domain;

import com.util.Const;

import com.util.PageData;

import com.util.Tools;

public class Page {

private int showCount; //每页显示记录数

private int totalPage;//总页数

private int totalResult;//总记录数

private int currentPage;//当前页

private int currentResult;//当前记录起始索引

private boolean entityOrField;//true:需要分页的地方，传入的参数就是Page实体；false:需要分页的地方，传入的参数所代表的实体拥有Page属性

private String pageStr;//最终页面显示的底部翻页导航，详细见：getPageStr();

private String pageAsy; //进行异步分装分页

private String pageUrl; //异步分页的URL

private String param; //异步分页动态参数

private PageData pd = new PageData();

public Page(){

try {

this.showCount = Integer.parseInt(Tools.readTxtFile(Const.PAGE));

} catch (Exception e) {

this.showCount = 15;

}

}

public int getTotalPage() {

if(totalResult%showCount==0)

totalPage = totalResult/showCount;

else

totalPage = totalResult/showCount+1;

return totalPage;

}

public void setTotalPage(int totalPage) {

this.totalPage = totalPage;

}

public int getTotalResult() {

return totalResult;

}

public void setTotalResult(int totalResult) {

this.totalResult = totalResult;

}

public int getCurrentPage() {

if(currentPage<=0)

currentPage = 1;

if(currentPage>getTotalPage())

currentPage = getTotalPage();

return currentPage;

}

public void setCurrentPage(int currentPage) {

this.currentPage = currentPage;

}

public String getPageStr() {

StringBuffer sb = new StringBuffer();

if(totalResult>0){

sb.append("
<ul>\n");

if(currentPage==1){

sb.append("
<li><a>共<font color=red>"+totalResult+"</font>条</a></li>\n");

sb.append("
<li><input type=\"number\" value=\"\" id=\"toGoPage\" style=\"width:60px;text-align:center;float:left\" placeholder=\"页码\"/></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"toTZ();\" class=\"btn btn-mini btn-success\">跳转</a></li>\n");

sb.append("
<li><a>首页</a></li>\n");

sb.append("
<li><a>上页</a></li>\n");

}else{

sb.append("
<li><a>共<font color=red>"+totalResult+"</font>条</a></li>\n");

sb.append("
<li><input type=\"number\" value=\"\" id=\"toGoPage\" style=\"width:60px;text-align:center;float:left\" placeholder=\"页码\"/></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"toTZ();\" class=\"btn btn-mini btn-success\">跳转</a></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage(1)\">首页</a></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage("+(currentPage-1)+")\">上页</a></li>\n");

}

int showTag = 5;//分页标签显示数量

int startTag = 1;

if(currentPage>showTag){

startTag = currentPage-1;

}

int endTag = startTag+showTag-1;

for(int i=startTag; i<=totalPage && i<=endTag; i++){

if(currentPage==i)

sb.append("<li><a><font color='#808080'>"+i+"</font></a></li>\n");

else

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage("+i+")\">"+i+"</a></li>\n");

}

if(currentPage==totalPage){

sb.append("
<li><a>下页</a></li>\n");

sb.append("
<li><a>尾页</a></li>\n");

}else{

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage("+(currentPage+1)+")\">下页</a></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage("+totalPage+")\">尾页</a></li>\n");

}

sb.append("
<li><a>第"+currentPage+"页</a></li>\n");

sb.append("
<li><a>共"+totalPage+"页</a></li>\n");

sb.append("
<li><select title='显示条数' style=\"width:55px;float:left;\" onchange=\"changeCount(this.value)\">\n");

sb.append("
<option value='"+showCount+"'>"+showCount+"</option>\n");

sb.append("
<option value='10'>10</option>\n");

sb.append("
<option value='20'>20</option>\n");

sb.append("
<option value='30'>30</option>\n");

sb.append("
<option value='40'>40</option>\n");

sb.append("
<option value='50'>50</option>\n");

sb.append("
<option value='60'>60</option>\n");

sb.append("
<option value='70'>70</option>\n");

sb.append("
<option value='80'>80</option>\n");

sb.append("
<option value='90'>90</option>\n");

sb.append("
<option value='99'>99</option>\n");

sb.append("
</select>\n");

sb.append("
</li>\n");

sb.append("</ul>\n");

sb.append("<script type=\"text/javascript\">\n");

//换页函数

sb.append("function nextPage(page){");

sb.append("
if(true && document.forms[0]){\n");

sb.append("
var url = document.forms[0].getAttribute(\"action\");\n");

sb.append("
if(url.indexOf('?')>-1){url += \"&"+(entityOrField?"currentPage":"page.currentPage")+"=\";}\n");

sb.append("
else{url += \"?"+(entityOrField?"currentPage":"page.currentPage")+"=\";}\n");

sb.append("
url = url + page + \"&" +(entityOrField?"showCount":"page.showCount")+"="+showCount+"\";\n");

sb.append("
document.forms[0].action = url;\n");

sb.append("
document.forms[0].submit();\n");

sb.append("
}else{\n");

sb.append("
var url = document.location+'';\n");

sb.append("
if(url.indexOf('?')>-1){url = url.substring(0,url.indexOf('?'));}\n");

sb.append("
if(url.indexOf('?')>-1){\n");

sb.append("
if(url.indexOf('currentPage')>-1){\n");

sb.append("
var reg = /currentPage=\\d*/g;\n");

sb.append("
url = url.replace(reg,'currentPage=');\n");

sb.append("
}else{\n");

sb.append("
url += \"&"+(entityOrField?"currentPage":"page.currentPage")+"=\";\n");

sb.append("
}\n");

sb.append("
}else{url += \"?"+(entityOrField?"currentPage":"page.currentPage")+"=\";}\n");

sb.append("
url = url + page + \"&" +(entityOrField?"showCount":"page.showCount")+"="+showCount+"\";\n");

sb.append("
document.location = url;\n");

sb.append("
}\n");

sb.append("}\n");

//调整每页显示条数

sb.append("function changeCount(value){");

sb.append("
if(true && document.forms[0]){\n");

sb.append("
var url = document.forms[0].getAttribute(\"action\");\n");

sb.append("
if(url.indexOf('?')>-1){url += \"&"+(entityOrField?"currentPage":"page.currentPage")+"=\";}\n");

sb.append("
else{url += \"?"+(entityOrField?"currentPage":"page.currentPage")+"=\";}\n");

sb.append("
url = url + \"1&" +(entityOrField?"showCount":"page.showCount")+"=\"+value;\n");

sb.append("
document.forms[0].action = url;\n");

sb.append("
document.forms[0].submit();\n");

sb.append("
}else{\n");

sb.append("
var url = document.location+'';\n");

sb.append("
if(url.indexOf('?')>-1){url = url.substring(0,url.indexOf('?'));}\n");

sb.append("
if(url.indexOf('?')>-1){\n");

sb.append("
if(url.indexOf('currentPage')>-1){\n");

sb.append("
var reg = /currentPage=\\d*/g;\n");

sb.append("
url = url.replace(reg,'currentPage=');\n");

sb.append("
}else{\n");

sb.append("
url += \"1&"+(entityOrField?"currentPage":"page.currentPage")+"=\";\n");

sb.append("
}\n");

sb.append("
}else{url += \"?"+(entityOrField?"currentPage":"page.currentPage")+"=1\";}\n");

sb.append("
url = url + \"&" +(entityOrField?"showCount":"page.showCount")+"=\"+value;\n");

sb.append("
document.location = url;\n");

sb.append("
}\n");

sb.append("}\n");

//跳转函数

sb.append("function toTZ(){");

sb.append("var toPaggeVlue = document.getElementById(\"toGoPage\").value;");

sb.append("if(toPaggeVlue == ''){document.getElementById(\"toGoPage\").value=1;return;}");

sb.append("if(isNaN(Number(toPaggeVlue))){document.getElementById(\"toGoPage\").value=1;return;}");

sb.append("nextPage(toPaggeVlue);");

sb.append("}\n");

sb.append("</script>\n");

}

pageStr = sb.toString();

return pageStr;

}

public void setPageStr(String pageStr) {

this.pageStr = pageStr;

}

public String getPageAsy() {

StringBuffer sb = new StringBuffer();

if(totalResult>0){

sb.append("
<ul>\n");

if(currentPage==1){

sb.append("
<li><a>共<font color=red>"+totalResult+"</font>条</a></li>\n");

sb.append("
<li><input type=\"number\" value=\"\" id=\"toGoPage\" style=\"width:50px;text-align:center;float:left\" placeholder=\"页码\"/></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"toTZ();\" class=\"btn btn-mini btn-success\">跳转</a></li>\n");

sb.append("
<li><a>首页</a></li>\n");

sb.append("
<li><a>上页</a></li>\n");

}else{

sb.append("
<li><a>共<font color=red>"+totalResult+"</font>条</a></li>\n");

sb.append("
<li><input type=\"number\" value=\"\" id=\"toGoPage\" style=\"width:50px;text-align:center;float:left\" placeholder=\"页码\"/></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"toTZ();\" class=\"btn btn-mini btn-success\">跳转</a></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage(1)\">首页</a></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage("+(currentPage-1)+")\">上页</a></li>\n");

}

int showTag = 5;//分页标签显示数量

int startTag = 1;

if(currentPage>showTag){

startTag = currentPage-1;

}

int endTag = startTag+showTag-1;

for(int i=startTag; i<=totalPage && i<=endTag; i++){

if(currentPage==i)

sb.append("<li><a><font color='#808080'>"+i+"</font></a></li>\n");

else

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage("+i+")\">"+i+"</a></li>\n");

}

if(currentPage==totalPage){

sb.append("
<li><a>下页</a></li>\n");

sb.append("
<li><a>尾页</a></li>\n");

}else{

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage("+(currentPage+1)+")\">下页</a></li>\n");

sb.append("
<li style=\"cursor:pointer;\"><a onclick=\"nextPage("+totalPage+")\">尾页</a></li>\n");

}

sb.append("
<li><a>第"+currentPage+"页</a></li>\n");

sb.append("
<li><a>共"+totalPage+"页</a></li>\n");

sb.append("
<li><select title='显示条数' style=\"width:55px;float:left;\" onchange=\"changeCount(this.value)\">\n");

sb.append("
<option value='"+showCount+"'>"+showCount+"</option>\n");

sb.append("
<option value='10'>10</option>\n");

sb.append("
<option value='20'>20</option>\n");

sb.append("
<option value='30'>30</option>\n");

sb.append("
<option value='40'>40</option>\n");

sb.append("
<option value='50'>50</option>\n");

sb.append("
<option value='60'>60</option>\n");

sb.append("
<option value='70'>70</option>\n");

sb.append("
<option value='80'>80</option>\n");

sb.append("
<option value='90'>90</option>\n");

sb.append("
<option value='99'>99</option>\n");

sb.append("
</select>\n");

sb.append("
</li>\n");

sb.append("</ul>\n");

sb.append("<script type=\"text/javascript\">\n");

//换页函数

sb.append("function nextPage(page){\n");

sb.append("$.ajax({\n");

sb.append("async:true,\n");

sb.append("type:\"get\",\n");

sb.append("url:\""+pageUrl+"?"+(entityOrField?"currentPage":"page.currentPage")+"=\"+page+\"");

sb.append("&"+(entityOrField?"showCount":"page.showCount")+"="+showCount+""+(param==null?"":"&date="+param+"")+"\",\n");

sb.append("dataType:\"html\",\n");

sb.append("success:function(data,textStatus){$(\"#data\").replaceWith(data);}\n");

sb.append("});\n");

sb.append("}\n");

//调整每页显示条数

sb.append("function changeCount(value){");

sb.append("$.ajax({\n");

sb.append("async:true,\n");

sb.append("type:\"get\",\n");

sb.append("url:\""+pageUrl+"?"+(entityOrField?"currentPage":"page.currentPage")+"=1");

sb.append("&showCount=\"+value+\""+(param==null?"":"&data="+param)+"\",\n");

sb.append("dataType:\"html\",\n");

sb.append("success:function(data,textStatus){$(\"#data\").replaceWith(data);}\n");

sb.append("});\n");

sb.append("}\n");

//跳转函数

sb.append("function toTZ(){");

sb.append("var toPaggeVlue = document.getElementById(\"toGoPage\").value;");

sb.append("if(toPaggeVlue == ''){document.getElementById(\"toGoPage\").value=1;return;}");

sb.append("if(isNaN(Number(toPaggeVlue))){document.getElementById(\"toGoPage\").value=1;return;}");

sb.append("nextPage(toPaggeVlue);");

sb.append("}\n");

sb.append("</script>\n");

}

pageAsy = sb.toString();

return pageAsy;

}

public void setPageAsy(String pageAsy) {

this.pageAsy = pageAsy;

}

public int getShowCount() {

return showCount;

}

public void setShowCount(int showCount) {

this.showCount = showCount;

}

public int getCurrentResult() {

currentResult = (getCurrentPage()-1)*getShowCount();

if(currentResult<0)

currentResult = 0;

return currentResult;

}

public void setCurrentResult(int currentResult) {

this.currentResult = currentResult;

}

public boolean isEntityOrField() {

return entityOrField;

}

public void setEntityOrField(boolean entityOrField) {

this.entityOrField = entityOrField;

}

public PageData getPd() {

return pd;

}

需在mybatis.xml中配置

public void setPd(PageData pd) {

this.pd = pd;

}

public String getPageUrl() {

return pageUrl;

}

public void setPageUrl(String pageUrl) {

this.pageUrl = pageUrl;

}

public String getParam() {

return param;

}

public void setParam(String param) {

this.param = param;

}

}