springMVC详细配置+Mysql+jdbcTemplate实现分页功能

本例子使用到的相关技术有：springMVC+mysql+jquery+jdbcTemplate+jstl+json+bootstrap等

(P:网上很少找到完整的springMVC+mysql实现分页查询，所以就自己详细的做了一个完整的例子)

(环境：jdk1.6 +tomcat7.0+mysql+eclipse....)

(包/文件：json.lib+jquery.js+spring3.0相关jar+jstl.jar+bootstrap相关css\js.....)

(传输数据格式为：json)

( 

SpringMVC 的核心原理：

1，用户发送请求给服务器：url:user.do

2，服务器收到请求。发现DispatchServlet 可以处理。于是调用DispatchServlet。

3，DispatchServlet 内部，通过HandleMapping 检查这个url 有没有对应的Controller。如果有，则调用Controller.

4，Controller 开始执行。

5，Controller 执行完后，如果返回字符串，则ViewResolver 将字符串转化成相对应的视图对象；如果返回ModelAndView ，该对象本身就包含了视图对象信息。

6，DispatchServlet 将执行视图对象中的数据，输出给服务器。

7，服务器将数据输出给客户端。

)

一，先秀效果图(不是很美观，只为实现效果)：

二：整体结构

       1，src(由于工程名较敏感，所以******)

             

       2, webContent

            

三：主要配置文件

     1.web.xml 

 

 
    Spring3MVC 
     
       encodingFilter
       
           org.springframework.web.filter.CharacterEncodingFilter
       
       
           encoding
           UTF-8
       
       
           forceEncoding
           true
       
    
    
       encodingFilter
       /*
    
    
     
        spring
          org.springframework.web.servlet.DispatcherServlet 
        1 
     
     
        spring 
        *.do 
        
      
        index.jsp 
     

     2.spring-servlet.xml     

	
	
 

	
	
		
		
			
				
			
		
	

	
	
	
	
		
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     3.***.properties     

projectURL=http://localhost:8080/fk/
downloadURL=http://localhost:8080/fk/upload/download/ 
uploadURL=http://localhost:8080/fk/temp/

四：java类(business为本例实例)

      1，AbstractDao     

public class AbstractDao extends JdbcDaoSupport {
	@Resource(name = "dataSource")
	public void setSuperDataSource(DataSource dataSource) {
		super.setDataSource(dataSource);
	}
}

      2,BusinessDao(只展示分页查询方法)

@Repository("businessDao")
public class BusinessDao extends AbstractDao{ 
/**
	 * 分页查询  
	 * @param currentPage  当前页 
	 * @param numPerPage   每页记录数
	 * @return 
	 */
	public Pagination queryPageBusiness(Integer currentPage,Integer numPerPage) {  
		String sql="SELECT * FROM business ORDER BY businessId ASC ";
		Pagination page=new Pagination(sql, currentPage, numPerPage,  getJdbcTemplate());
		return page;    
	}
}

       3,PageInation（分页工具类）      

public class Pagination extends JdbcDaoSupport{
	
	public static final int NUMBERS_PER_PAGE = 10;
	 //一页显示的记录数
	  private int numPerPage; 
	 //记录总数
	  private int totalRows; 
	 //总页数
	  private int totalPages; 
	 //当前页码
	  private int currentPage; 
	  //起始行数
	  private int startIndex;
	  //结束行数
	  private int lastIndex;
	  //结果集存放List
	  private List resultList;
	  //JdbcTemplate jTemplate
	  private JdbcTemplate jTemplate;
	 
	  /**
	   * 每页显示10条记录的构造函数,使用该函数必须先给Pagination设置currentPage，jTemplate初值
	   * @param sql Oracle语句
	   */
	  public Pagination(String sql){
	    if(jTemplate == null){
	      throw new IllegalArgumentException("com.deity.ranking.util.Pagination.jTemplate is null,please initial it first. ");
	    }else if(sql.equals("")){
	      throw new IllegalArgumentException("com.deity.ranking.util.Pagination.sql is empty,please initial it first. ");
	    }
	    new Pagination(sql,currentPage,NUMBERS_PER_PAGE,jTemplate);
	  }
	  
	  /**分页构造函数
	   * @param sql 根据传入的sql语句得到一些基本分页信息
	   * @param currentPage 当前页
	   * @param numPerPage 每页记录数
	   * @param jTemplate JdbcTemplate实例
	   */
	  public Pagination(String sql,int currentPage,int numPerPage,JdbcTemplate jTemplate){
	    if(jTemplate == null){
	      throw new IllegalArgumentException("com.deity.ranking.util.Pagination.jTemplate is null,please initial it first. ");
	    }else if(sql == null || sql.equals("")){
	      throw new IllegalArgumentException("com.deity.ranking.util.Pagination.sql is empty,please initial it first. ");
	    }
	    //设置每页显示记录数
	    setNumPerPage(numPerPage);
	    //设置要显示的页数
	    setCurrentPage(currentPage);
	    //计算总记录数
	    StringBuffer totalSQL = new StringBuffer(" SELECT count(*) FROM ( ");
	    totalSQL.append(sql);
	    totalSQL.append(" ) totalTable ");
	    //给JdbcTemplate赋值
	    setJdbcTemplate(jTemplate);
	    //总记录数
	    setTotalRows(getJdbcTemplate().queryForInt(totalSQL.toString()));
	    //计算总页数
	    setTotalPages();
	    //计算起始行数
	    setStartIndex();
	    //计算结束行数
	    setLastIndex();
	    system.out.println("lastIndex="+lastIndex);//
	    
	    //构造oracle数据库的分页语句
	   /** StringBuffer paginationSQL = new StringBuffer(" SELECT * FROM ( ");
	    paginationSQL.append(" SELECT temp.* ,ROWNUM num FROM ( ");
	    paginationSQL.append(sql);
	    paginationSQL.append(" ) temp where ROWNUM <= " + lastIndex);
	    paginationSQL.append(" ) WHERE num > " + startIndex); 
	     */ 
	    
	    
	    //装入结果集
	    setResultList(getJdbcTemplate().queryForList(getMySQLPageSQL(sql,startIndex,numPerPage)));
	  }
	  
	   
	  
	    /**
		 * 构造MySQL数据分页SQL 
		 * @param queryString
		 * @param startIndex
		 * @param pageSize
		 * @return
		 */
		public String getMySQLPageSQL(String queryString, Integer startIndex, Integer pageSize)
		{
			String result = "";
			if (null != startIndex && null != pageSize)
			{
				result = queryString + " limit " + startIndex + "," + pageSize;
			} else if (null != startIndex && null == pageSize)
			{
				result = queryString + " limit " + startIndex;
			} else
			{
				result = queryString;
			}
			return result;
		}
		
		
	 
	  public int getCurrentPage() {
	    return currentPage;
	  } 

	  public void setCurrentPage(int currentPage) {
	    this.currentPage = currentPage;
	  }

	  public int getNumPerPage() {
	    return numPerPage;
	  }

	  public void setNumPerPage(int numPerPage) {
	    this.numPerPage = numPerPage;
	  }

	  public List getResultList() {
	    return resultList;
	  }

	  public void setResultList(List resultList) {
	    this.resultList = resultList;
	  }

	  public int getTotalPages() {
	    return totalPages;
	  }
	 //计算总页数
	  public void setTotalPages() {
	    if(totalRows % numPerPage == 0){
	      this.totalPages = totalRows / numPerPage;
	    }else{
	      this.totalPages = (totalRows / numPerPage) + 1;
	    }
	  }

	  public int getTotalRows() {
	    return totalRows;
	  }

	  public void setTotalRows(int totalRows) {
	    this.totalRows = totalRows;
	  }

	  public int getStartIndex() {
	    return startIndex;
	  }

	  public void setStartIndex() {
	    this.startIndex = (currentPage - 1) * numPerPage;
	  }

	  public int getLastIndex() {
	    return lastIndex;
	  }

	  public JdbcTemplate getJTemplate() {
	    return jTemplate;
	  }

	  public void setJTemplate(JdbcTemplate template) {
	    jTemplate = template;
	  }
	   
	 //计算结束时候的索引
	  public void setLastIndex() {
	    System.out.println("totalRows="+totalRows);///
	    System.out.println("numPerPage="+numPerPage);///
	    if( totalRows < numPerPage){
	      this.lastIndex = totalRows;
	    }else if((totalRows % numPerPage == 0) || (totalRows % numPerPage != 0 && currentPage < totalPages)){
	      this.lastIndex = currentPage * numPerPage;
	    }else if(totalRows % numPerPage != 0 && currentPage == totalPages){//最后一页
	      this.lastIndex = totalRows ;
	    }
	  }

}

       4,BusinessService       

/**
 * 业务处理
 * @author Administrator
 *
 */
@Service("BusinessService")   
public class BusinessService { 

	@Resource
    private BusinessDao businessDao;


	/**
	 * 分页查询  
	 * @param currentPage  当前页 
	 * @param numPerPage   每页记录数
	 * @return 
	 */
	public Pagination queryPageBusiness(Integer currentPage,Integer numPerPage) {   
		return businessDao.queryPageBusiness(currentPage, numPerPage); 
	}
}

       5,BusinessController        

@Controller
@RequestMapping(value = http://blog.csdn.net/huahuagongzi9999/article/details/"/business")
public class BusinessController {

	@Resource
	private  BusinessService businessService;

	private final static String uploadURL=propertiesUtil.getUrl("uploadURL");   
/**  
	 * 分页查询所有
	 * @param request
	 * @param response 
	 */ 
	@RequestMapping(value = "queryPageBusiness.do") 
	public void queryPageBusiness(HttpServletRequest request,HttpServletResponse response) {
		String message = "";
		String status = ""; 
		PrintWriter out = null;
		List> businessList =null;
		Pagination page=null; 
 		Map map = new HashMap();
		try {
			out = response.getWriter();
			String currentPage  = URLDecoder.decode(request.getParameter("currentPage"));
			String numPerPage  = URLDecoder.decode(request.getParameter("numPerPage"));
			if("".equals(currentPage)||"".equals(numPerPage)){ 
				page =businessService.queryPageBusiness(1, 10);  
			}else{ 
				page =businessService.queryPageBusiness(StringUtil.getInteger(currentPage), StringUtil.getInteger(numPerPage));  
			} 
			List list=page.getResultList();
			businessList=new ArrayList>(); 
			for (int i = 0,len=list.size();i maps=new HashMap();
				Map mapRe=(Map)list.get(i);       
				maps.put("businessPic", StringUtil.nullOrBlank(mapRe.get("businessPic")+"")?"?"":uploadURL+mapRe.get("businessPic"));
				maps.put("businessName", mapRe.get("businessName"));
				maps.put("businessId", mapRe.get("businessId"));
				maps.put("businessEname", mapRe.get("businessEname"));  
				maps.put("createTime", FormatDateTime.formatDateTime("yyyy-MM-dd", mapRe.get("createTime")+""));
				businessList.add(maps); 
			}
			message="success"; 
			status = Constants.RETURN_STATUS_0;
		} catch (Exception e1) { 
			e1.printStackTrace();
			message="failure";
			status = Constants.RETURN_STATUS_1;
		}finally{ 
			map.put("message", message); 
			map.put("totalPage", page.getTotalPages());  
			map.put("currentPage", page.getCurrentPage());  
			map.put("totalRows", page.getTotalRows());  
			map.put("numPerPage", page.getNumPerPage());  
			map.put("status", status);  
			map.put("businessList", businessList);  
			//必须设置字符编码，否则返回json会乱码 
			response.setContentType("text/html;charset=UTF-8");     
			out.write(JSONSerializer.toJSON(map).toString());
			out.flush();
			out.close();
		}  
		
	} 
}

  

五，web（分页jsp代码）

     

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 



 




 

  
		

	  
  

   

  

		
 
		    
 
			

			   
			   
			   

				

				
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