Java分页实现

public interface Paginable {

    public int getTotalCount();

    public int getPageCount();

    public int getPageSize();

    public int getCurrentPage();

    public int getStartIndex();

    public boolean isFirstPage();

    public boolean isLastPage();

    public int getNextPage();

    public int getPrePage();
}

public interface Paginable {

	public int getTotalCount();

	public int getPageCount();

	public int getPageSize();

	public int getCurrentPage();
	
	public int getStartIndex();

	public boolean isFirstPage();

	public boolean isLastPage();

	public int getNextPage();

	public int getPrePage();
}

public class SimplePage implements Paginable {

    public final static int PAGESIZE = 4;

    // Total count of records
    protected int totalCount;

    // The size of records per page
    protected int pageSize = PAGESIZE;

    // Current page
    protected int currentPage;

    // The count of pages
    private int pageCount;

    public SimplePage() {
    }

    public SimplePage(int totalCount) {
        setPageSize(PAGESIZE);
        setTotalCount(totalCount);
        setCurrentPage(1);
    }

    public SimplePage(int currentPage, int totalCount) {
        setPageSize(PAGESIZE);
        setTotalCount(totalCount);
        setCurrentPage(currentPage);
    }

    public SimplePage(int currentPage, int pageSize, int totalCount) {
        setPageSize(pageSize);
        setTotalCount(totalCount);
        setCurrentPage(currentPage);
    }

    public boolean isFirstPage() {
        return currentPage <= 1;
    }

    public boolean isLastPage() {
        return currentPage >= pageCount;
    }

    public int getNextPage() {
        if (isLastPage()) {
            return currentPage;
        } else {
            return currentPage + 1;
        }
    }

    public int getPrePage() {
        if (isFirstPage()) {
            return currentPage;
        } else {
            return currentPage - 1;
        }
    }

    public int getCurrentPage() {
        return currentPage;
    }

    public int getStartIndex() {
        return (currentPage - 1) * pageSize;
    }

    public void setCurrentPage(int currentPage) {
        if (totalCount <= 0)
            this.currentPage = 0;
        else if (currentPage >= pageCount)
            this.currentPage = pageCount;
        else if (currentPage <= 1)
            this.currentPage = 1;
        else {
            this.currentPage = currentPage;
        }
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }

    public int getTotalCount() {
        return totalCount;
    }

    public void setTotalCount(int totalCount) {
        if (totalCount > 0) {
            this.totalCount = totalCount;
            pageCount = totalCount / pageSize;
            if (totalCount % pageSize > 0)
                pageCount++;
        } else {
            this.totalCount = 0;
        }
    }

    public int getPageCount() {
        return pageCount;
    }

    public void setPageCount(int pageCount) {
        this.pageCount = pageCount;
    }
}

public class SimplePage implements Paginable {

	public final static int PAGESIZE = 4;

	// Total count of records
	protected int totalCount;
	
	// The size of records per page
	protected int pageSize = PAGESIZE;
	
	// Current page
	protected int currentPage;
	
	// The count of pages
	private int pageCount;

	public SimplePage() {
	}
	
	public SimplePage(int totalCount) {
		setPageSize(PAGESIZE);
		setTotalCount(totalCount);
		setCurrentPage(1);
	}

	public SimplePage(int currentPage, int totalCount) {
		setPageSize(PAGESIZE);
		setTotalCount(totalCount);
		setCurrentPage(currentPage);
	}

	public SimplePage(int currentPage, int pageSize, int totalCount) {
		setPageSize(pageSize);
		setTotalCount(totalCount);
		setCurrentPage(currentPage);
	}

	public boolean isFirstPage() {
		return currentPage <= 1;
	}

	public boolean isLastPage() {
		return currentPage >= pageCount;
	}

	public int getNextPage() {
		if (isLastPage()) {
			return currentPage;
		} else {
			return currentPage + 1;
		}
	}

	public int getPrePage() {
		if (isFirstPage()) {
			return currentPage;
		} else {
			return currentPage - 1;
		}
	}

	public int getCurrentPage() {
		return currentPage;
	}
	
	public int getStartIndex() {
		return (currentPage - 1) * pageSize;
	}

	public void setCurrentPage(int currentPage) {
		if (totalCount <= 0)
			this.currentPage = 0;
		else if (currentPage >= pageCount)
			this.currentPage = pageCount;
		else if (currentPage <= 1)
			this.currentPage = 1;
		else {
			this.currentPage = currentPage;
		}
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	public int getTotalCount() {
		return totalCount;
	}

	public void setTotalCount(int totalCount) {
		if (totalCount > 0) {
			this.totalCount = totalCount;
			pageCount = totalCount / pageSize;
			if (totalCount % pageSize > 0)
				pageCount++;
		} else {
			this.totalCount = 0;
		}
	}

	public int getPageCount() {
		return pageCount;
	}

	public void setPageCount(int pageCount) {
		this.pageCount = pageCount;
	}
}

import java.util.List;

@SuppressWarnings("serial")
public class Pagination extends SimplePage implements java.io.Serializable,
        Paginable {

    public Pagination() {
    }

    @SuppressWarnings("unchecked")
    public Pagination(int totalCount, List list) {
        super(totalCount);
        this.list = list;
    }

    @SuppressWarnings("unchecked")
    public Pagination(int currentPage, int totalCount, List list) {
        super(currentPage, totalCount);
        this.list = list;
    }

    @SuppressWarnings("unchecked")
    public Pagination(int currentPage, int pageSize, int totalCount, List list) {
        super(currentPage, pageSize, totalCount);
        this.list = list;
    }

    public Pagination(int currentPage, int pageSize, int totalCount) {
        super(currentPage, pageSize, totalCount);
    }

    public int getFirstResult() {
        return (currentPage - 1) * pageSize;
    }

    @SuppressWarnings("unchecked")
    private List list;

    @SuppressWarnings("unchecked")
    public List getList() {
        return list;
    }

    @SuppressWarnings("unchecked")
    public void setList(List list) {
        this.list = list;
    }
}

import java.util.List;

@SuppressWarnings("serial")
public class Pagination extends SimplePage implements java.io.Serializable,
		Paginable {

	public Pagination() {
	}

	@SuppressWarnings("unchecked")
	public Pagination(int totalCount, List list) {
		super(totalCount);
		this.list = list;
	}

	@SuppressWarnings("unchecked")
	public Pagination(int currentPage, int totalCount, List list) {
		super(currentPage, totalCount);
		this.list = list;
	}

	@SuppressWarnings("unchecked")
	public Pagination(int currentPage, int pageSize, int totalCount, List list) {
		super(currentPage, pageSize, totalCount);
		this.list = list;
	}

	public Pagination(int currentPage, int pageSize, int totalCount) {
		super(currentPage, pageSize, totalCount);
	}

	public int getFirstResult() {
		return (currentPage - 1) * pageSize;
	}

	@SuppressWarnings("unchecked")
	private List list;

	@SuppressWarnings("unchecked")
	public List getList() {
		return list;
	}

	@SuppressWarnings("unchecked")
	public void setList(List list) {
		this.list = list;
	}
}

public class PageUtil {

    public static String getPageBar1(Paginable page, String url) {
        String temp = "";
        if (url.indexOf("?") == -1) {
            temp = "?";
        } else {
            temp = "&";
        }
        StringBuffer pageBar = new StringBuffer();
        if (page.isFirstPage())
            pageBar.append("First Previous ");
        else {
            pageBar.append("<a href='").append(url).append(temp).append(
                    "currentPage=1'>First</a>&nbsp;");
            pageBar.append("<a href='").append(url).append(temp).append(
                    "currentPage=").append(page.getPrePage()).append(
                    "'>Previous</a>&nbsp;");
        }
        if (page.isLastPage())
            pageBar.append("Next Last&nbsp;");
        else {
            pageBar.append("<a href='").append(url).append(temp).append(
                    "currentPage=").append(page.getNextPage()).append(
                    "'>Next</a>&nbsp;");
            pageBar.append("<a href='").append(url).append(temp).append(
                    "currentPage=").append(page.getPageCount()).append(
                    "'>Last</a>&nbsp;");
        }
        pageBar.append("&nbsp;Total Page:").append(page.getPageCount()).append(
                "&nbsp;");
        pageBar.append("&nbsp;Go<select name='page' onChange=\"location='");
        pageBar.append(url).append(temp).append(
                "currentPage='+this.options[this.selectedIndex].value\">");
        int begin = (page.getCurrentPage() > 10) ? page.getCurrentPage() - 10
                : 1;
        int end = (page.getPageCount() - page.getCurrentPage() > 10) ? page
                .getCurrentPage() + 10 : page.getPageCount();
        for (int i = begin; i <= end; i++) {
            if (i == page.getCurrentPage())
                pageBar.append("<option value='").append(i).append(
                        "' selected>-").append(i).append("-</option>");
            else
                pageBar.append("<option value='").append(i).append("'>-")
                        .append(i).append("-</option>");
        }
        pageBar.append("</select>");
        return pageBar.toString();
    }

    //Implement other page bar you wanted
    public static String getPageBar2(Paginable page, String url){
        return "";
    }
}

public class PageUtil {

	public static String getPageBar1(Paginable page, String url) {
		String temp = "";
		if (url.indexOf("?") == -1) {
			temp = "?";
		} else {
			temp = "&";
		}
		StringBuffer pageBar = new StringBuffer();
		if (page.isFirstPage())
			pageBar.append("First Previous ");
		else {
			pageBar.append("<a href='").append(url).append(temp).append(
					"currentPage=1'>First</a>&nbsp;");
			pageBar.append("<a href='").append(url).append(temp).append(
					"currentPage=").append(page.getPrePage()).append(
					"'>Previous</a>&nbsp;");
		}
		if (page.isLastPage())
			pageBar.append("Next Last&nbsp;");
		else {
			pageBar.append("<a href='").append(url).append(temp).append(
					"currentPage=").append(page.getNextPage()).append(
					"'>Next</a>&nbsp;");
			pageBar.append("<a href='").append(url).append(temp).append(
					"currentPage=").append(page.getPageCount()).append(
					"'>Last</a>&nbsp;");
		}
		pageBar.append("&nbsp;Total Page:").append(page.getPageCount()).append(
				"&nbsp;");
		pageBar.append("&nbsp;Go<select name='page' onChange=\"location='");
		pageBar.append(url).append(temp).append(
				"currentPage='+this.options[this.selectedIndex].value\">");
		int begin = (page.getCurrentPage() > 10) ? page.getCurrentPage() - 10
				: 1;
		int end = (page.getPageCount() - page.getCurrentPage() > 10) ? page
				.getCurrentPage() + 10 : page.getPageCount();
		for (int i = begin; i <= end; i++) {
			if (i == page.getCurrentPage())
				pageBar.append("<option value='").append(i).append(
						"' selected>-").append(i).append("-</option>");
			else
				pageBar.append("<option value='").append(i).append("'>-")
						.append(i).append("-</option>");
		}
		pageBar.append("</select>");
		return pageBar.toString();
	}
	
	//Implement other page bar you wanted
	public static String getPageBar2(Paginable page, String url){
		return "";
	}
}

import java.io.Serializable;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Projections;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import page.Pagination;

public abstract class AbstractDaoManager extends HibernateDaoSupport {

    private boolean cacheQueries = false;

    private String queryCacheRegion;

    public void setCacheQueries(boolean cacheQueries) {
        this.cacheQueries = cacheQueries;
    }

    public void setQueryCacheRegion(String queryCacheRegion) {
        this.queryCacheRegion = queryCacheRegion;
    }

    public void save(final Object entity) {
        getHibernateTemplate().save(entity);
    }

    public void persist(final Object entity) {
        getHibernateTemplate().save(entity);
    }

    public void update(final Object entity) {
        getHibernateTemplate().update(entity);
    }

    public void delete(final Object entity) {
        getHibernateTemplate().delete(entity);
    }

    public Object load(final Class entity, final Serializable id) {
        return getHibernateTemplate().load(entity, id);
    }

    public Object get(final Class entity, final Serializable id) {
        return getHibernateTemplate().get(entity, id);
    }

    public List findAll(final Class entity) {
        return getHibernateTemplate().find("from " + entity.getName());
    }

    public List findByNamedQuery(final String namedQuery) {
        return getHibernateTemplate().findByNamedQuery(namedQuery);
    }

    public List findByNamedQuery(final String query, final Object parameter) {
        return getHibernateTemplate().findByNamedQuery(query, parameter);
    }

    public List findByNamedQuery(final String query, final Object[] parameters) {
        return getHibernateTemplate().findByNamedQuery(query, parameters);
    }

    public List find(final String query) {

分享到：

程序员面试题精选(03)－求子数组的最大和 | 程序员面试题精选(01) 把二元查找树转变成 ...

• 2010-10-18 22:11
• 浏览 470
• 评论(0)
• 分类:非技术
• 相关推荐

评论

发表评论

您还没有登录,请您登录后再发表评论