java 基础响应体定义 - 通用

package com.teewon.viewservice.entitiy.base;

import java.io.Serializable;
import java.util.List;

public class Response<T> implements Serializable
{
    private static final long serialVersionUID = 6766428592214605847L;
    
    private T responseEntity;
    
    private PageInfo<T> pageInfo;
    
    private ServerResult serverResult;
    
    public Response()
    {
        this.serverResult = getServerResult();
    }
    
    public Response(T t)
    {
        this.responseEntity = t;
        this.serverResult = getServerResult();
    }
    
    public Response(List<T> list)
    {
        if (list instanceof Page)
        {
            this.pageInfo = new PageInfo<T>(list);
        }
        else
        {
            this.pageInfo = new PageInfo<T>();
            this.pageInfo.setList(list);
            this.pageInfo.setTotal(null == list ? 0 : list.size());
        }
        this.serverResult = getServerResult();
    }
    
    public Response(String resultCode,String resultMessage,String internalMessage)
    {
        this.serverResult = new ServerResult();
        serverResult.setResultCode(resultCode);
        serverResult.setResultMessage(resultMessage);
    }
    
    public Response(String resultCode,String resultMessage)
    {
        this(resultCode,resultMessage,resultMessage);
    }
    
    public ServerResult getServerResult()
    {
        if (serverResult == null)
        {
            serverResult = new ServerResult();
            serverResult.setResultCode("200");
            serverResult.setResultMessage("请求成功");
        }
        return serverResult;
    }
    
    public void setServerResult(ServerResult serverResult)
    {
        this.serverResult = serverResult;
    }
    
    public T getResponseEntity()
    {
        return responseEntity;
    }
    
    public void setResponseEntity(T responseEntity)
    {
        this.responseEntity = responseEntity;
    }
    
    public PageInfo<T> getPageInfo()
    {
        return pageInfo;
    }
    
    public void setPageInfo(PageInfo<T> pageInfo)
    {
        this.pageInfo = pageInfo;
    }
}

package com.teewon.viewservice.entitiy.base;

import java.io.Serializable;

public class ServerResult implements Serializable
{
    private static final long serialVersionUID = -7556295999658379023L;
    
    /**
     * 返回码
     */
    private String resultCode;
    
    /**
     * 返回描述信息
     */
    private String resultMessage;
    
    public ServerResult()
    {
        
    }
    
    public ServerResult(String resultCode)
    {
        this(resultCode, "Success");
    }
    
    public ServerResult(String resultCode, String resultMessage)
    {
        super();
        this.resultCode = resultCode;
        this.resultMessage = resultMessage;
    }
    
    public String getResultMessage()
    {
        return resultMessage;
    }
    
    public void setResultMessage(String resultMessage)
    {
        this.resultMessage = resultMessage;
    }
    
    public String getResultCode()
    {
        return resultCode;
    }
    
    public void setResultCode(String resultCode)
    {
        this.resultCode = resultCode;
    }
}

package com.teewon.viewservice.entitiy.base;

import java.io.Serializable;
import java.util.List;

public class PageInfo<T> implements Serializable {
    private static final long serialVersionUID = 1L;
    private int pageNum;
    private int pageSize;
    private int size;

    private int startRow;
    private int endRow;
    //鎬昏褰曟暟
    private long total;
    //鎬婚〉鏁�
    private int pages;
    //缁撴灉闆�
    private List<T> list;

    //绗竴椤�
    private int firstPage;
    //鍓嶄竴椤�
    private int prePage;
    //涓嬩竴椤�
    private int nextPage;
    //鏈�鍚庝竴椤�
    private int lastPage;

    //鏄惁涓虹涓�椤�
    private boolean isFirstPage = false;
    //鏄惁涓烘渶鍚庝竴椤�
    private boolean isLastPage = false;
    //鏄惁鏈夊墠涓�椤�
    private boolean hasPreviousPage = false;
    //鏄惁鏈変笅涓�椤�
    private boolean hasNextPage = false;
    //瀵艰埅椤电爜鏁�
    private int navigatePages;
    //鎵�鏈夊鑸〉鍙�
    private int[] navigatepageNums;

    public PageInfo() {
    }

    /**
     * 鍖呰Page瀵硅薄
     *
     * @param list
     */
    public PageInfo(List<T> list) {
        this(list, 8);
    }

    /**
     * 鍖呰Page瀵硅薄
     *
     * @param list          page缁撴灉
     * @param navigatePages 椤电爜鏁伴噺
     */
    public PageInfo(List<T> list, int navigatePages) {
        if (list instanceof Page) {
            Page page = (Page) list;
            this.pageNum = page.getPageNum();
            this.pageSize = page.getPageSize();

            this.total = page.getTotal();
            this.pages = page.getPages();
            this.list = page;
            this.size = page.size();
            //鐢变簬缁撴灉鏄�>startRow鐨勶紝鎵�浠ュ疄闄呯殑闇�瑕�+1
            if (this.size == 0) {
                this.startRow = 0;
                this.endRow = 0;
            } else {
                this.startRow = page.getStartRow() + 1;
                //璁＄畻瀹為檯鐨別ndRow锛堟渶鍚庝竴椤电殑鏃跺�欑壒娈婏級
                this.endRow = this.startRow - 1 + this.size;
            }
            this.navigatePages = navigatePages;
            //璁＄畻瀵艰埅椤�
            calcNavigatepageNums();
            //璁＄畻鍓嶅悗椤碉紝绗竴椤碉紝鏈�鍚庝竴椤�
            calcPage();
            //鍒ゆ柇椤甸潰杈圭晫
            judgePageBoudary();
        }
    }

    /**
     * 璁＄畻瀵艰埅椤�
     */
    private void calcNavigatepageNums() {
        //褰撴�婚〉鏁板皬浜庢垨绛変簬瀵艰埅椤电爜鏁版椂
        if (pages <= navigatePages) {
            navigatepageNums = new int[pages];
            for (int i = 0; i < pages; i++) {
                navigatepageNums[i] = i + 1;
            }
        } else { //褰撴�婚〉鏁板ぇ浜庡鑸〉鐮佹暟鏃�
            navigatepageNums = new int[navigatePages];
            int startNum = pageNum - navigatePages / 2;
            int endNum = pageNum + navigatePages / 2;

            if (startNum < 1) {
                startNum = 1;
                //(鏈�鍓峮avigatePages椤�
                for (int i = 0; i < navigatePages; i++) {
                    navigatepageNums[i] = startNum++;
                }
            } else if (endNum > pages) {
                endNum = pages;
                //鏈�鍚巒avigatePages椤�
                for (int i = navigatePages - 1; i >= 0; i--) {
                    navigatepageNums[i] = endNum--;
                }
            } else {
                //鎵�鏈変腑闂撮〉
                for (int i = 0; i < navigatePages; i++) {
                    navigatepageNums[i] = startNum++;
                }
            }
        }
    }

    /**
     * 璁＄畻鍓嶅悗椤碉紝绗竴椤碉紝鏈�鍚庝竴椤�
     */
    private void calcPage() {
        if (navigatepageNums != null && navigatepageNums.length > 0) {
            firstPage = navigatepageNums[0];
            lastPage = navigatepageNums[navigatepageNums.length - 1];
            if (pageNum > 1) {
                prePage = pageNum - 1;
            }
            if (pageNum < pages) {
                nextPage = pageNum + 1;
            }
        }
    }

    /**
     * 鍒ゅ畾椤甸潰杈圭晫
     */
    private void judgePageBoudary() {
        isFirstPage = pageNum == 1;
        isLastPage = pageNum == pages;
        hasPreviousPage = pageNum > 1;
        hasNextPage = pageNum < pages;
    }

    public int getPageNum() {
        return pageNum;
    }

    public void setPageNum(int pageNum) {
        this.pageNum = pageNum;
    }

    public int getPageSize() {
        return pageSize;
    }

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

    public int getSize() {
        return size;
    }

    public void setSize(int size) {
        this.size = size;
    }

    public int getStartRow() {
        return startRow;
    }

    public void setStartRow(int startRow) {
        this.startRow = startRow;
    }

    public int getEndRow() {
        return endRow;
    }

    public void setEndRow(int endRow) {
        this.endRow = endRow;
    }

    public long getTotal() {
        return total;
    }

    public void setTotal(long total) {
        this.total = total;
    }

    public int getPages() {
        return pages;
    }

    public void setPages(int pages) {
        this.pages = pages;
    }

    public List<T> getList() {
        return list;
    }

    public void setList(List<T> list) {
        this.list = list;
    }

    public int getFirstPage() {
        return firstPage;
    }

    public void setFirstPage(int firstPage) {
        this.firstPage = firstPage;
    }

    public int getPrePage() {
        return prePage;
    }

    public void setPrePage(int prePage) {
        this.prePage = prePage;
    }

    public int getNextPage() {
        return nextPage;
    }

    public void setNextPage(int nextPage) {
        this.nextPage = nextPage;
    }

    public int getLastPage() {
        return lastPage;
    }

    public void setLastPage(int lastPage) {
        this.lastPage = lastPage;
    }

    public boolean isIsFirstPage() {
        return isFirstPage;
    }

    public void setIsFirstPage(boolean isFirstPage) {
        this.isFirstPage = isFirstPage;
    }

    public boolean isIsLastPage() {
        return isLastPage;
    }

    public void setIsLastPage(boolean isLastPage) {
        this.isLastPage = isLastPage;
    }

    public boolean isHasPreviousPage() {
        return hasPreviousPage;
    }

    public void setHasPreviousPage(boolean hasPreviousPage) {
        this.hasPreviousPage = hasPreviousPage;
    }

    public boolean isHasNextPage() {
        return hasNextPage;
    }

    public void setHasNextPage(boolean hasNextPage) {
        this.hasNextPage = hasNextPage;
    }

    public int getNavigatePages() {
        return navigatePages;
    }

    public void setNavigatePages(int navigatePages) {
        this.navigatePages = navigatePages;
    }

    public int[] getNavigatepageNums() {
        return navigatepageNums;
    }

    public void setNavigatepageNums(int[] navigatepageNums) {
        this.navigatepageNums = navigatepageNums;
    }

    @Override
    public String toString() {
        final StringBuffer sb = new StringBuffer("PageInfo{");
        sb.append("pageNum=").append(pageNum);
        sb.append(", pageSize=").append(pageSize);
        sb.append(", size=").append(size);
        sb.append(", startRow=").append(startRow);
        sb.append(", endRow=").append(endRow);
        sb.append(", total=").append(total);
        sb.append(", pages=").append(pages);
        sb.append(", list=").append(list);
        sb.append(", firstPage=").append(firstPage);
        sb.append(", prePage=").append(prePage);
        sb.append(", nextPage=").append(nextPage);
        sb.append(", lastPage=").append(lastPage);
        sb.append(", isFirstPage=").append(isFirstPage);
        sb.append(", isLastPage=").append(isLastPage);
        sb.append(", hasPreviousPage=").append(hasPreviousPage);
        sb.append(", hasNextPage=").append(hasNextPage);
        sb.append(", navigatePages=").append(navigatePages);
        sb.append(", navigatepageNums=");
        if (navigatepageNums == null) sb.append("null");
        else {
            sb.append('[');
            for (int i = 0; i < navigatepageNums.length; ++i)
                sb.append(i == 0 ? "" : ", ").append(navigatepageNums[i]);
            sb.append(']');
        }
        sb.append('}');
        return sb.toString();
    }
}

package com.teewon.viewservice.entitiy.base;

import java.util.ArrayList;
import java.util.List;

import org.apache.ibatis.session.RowBounds;

public class Page<E> extends ArrayList<E> {
    private static final long serialVersionUID = 1L;

    private static final int NO_SQL_COUNT = -1;
    private static final int SQL_COUNT = 0;
    private int pageNum;
    private int pageSize;
    private int startRow;
    private int endRow;
    private long total;
    private int pages;
    private Boolean reasonable;
    private Boolean pageSizeZero;

    public Page() {
        super();
    }

    public Page(int pageNum, int pageSize) {
        this(pageNum, pageSize, SQL_COUNT, null);
    }

    public Page(int pageNum, int pageSize, boolean count) {
        this(pageNum, pageSize, count ? Page.SQL_COUNT : Page.NO_SQL_COUNT, null);
    }

    private Page(int pageNum, int pageSize, int total, Boolean reasonable) {
        super(0);
        if (pageNum == 1 && pageSize == Integer.MAX_VALUE) {
            pageSizeZero = true;
            pageSize = 0;
        }
        this.pageNum = pageNum;
        this.pageSize = pageSize;
        this.total = total;
        calculateStartAndEndRow();
        setReasonable(reasonable);
    }

    public Page(RowBounds rowBounds, boolean count) {
        this(rowBounds, count ? Page.SQL_COUNT : Page.NO_SQL_COUNT);
    }


    public Page(RowBounds rowBounds, int total) {
        super(0);
        if (rowBounds.getOffset() == 0 && rowBounds.getLimit() == Integer.MAX_VALUE) {
            pageSizeZero = true;
            this.pageSize = 0;
        } else {
            this.pageSize = rowBounds.getLimit();
        }
        this.startRow = rowBounds.getOffset();
        //RowBounds鏂瑰紡榛樿涓嶆眰count鎬绘暟锛屽鏋滄兂姹俢ount,鍙互淇敼杩欓噷涓篠QL_COUNT
        this.total = total;
        this.endRow = this.startRow + rowBounds.getLimit();
    }

    public List<E> getResult() {
        return this;
    }

    public int getPages() {
        return pages;
    }

    public int getEndRow() {
        return endRow;
    }

    public int getPageNum() {
        return pageNum;
    }

    public void setPageNum(int pageNum) {
        //鍒嗛〉鍚堢悊鍖栵紝閽堝涓嶅悎鐞嗙殑椤电爜鑷姩澶勭悊
        this.pageNum = ((reasonable != null && reasonable) && pageNum <= 0) ? 1 : pageNum;
    }

    public int getPageSize() {
        return pageSize;
    }

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

    public int getStartRow() {
        return startRow;
    }

    public long getTotal() {
        return total;
    }

    public void setTotal(long total) {
        this.total = total;
        if (pageSize > 0) {
            pages = (int) (total / pageSize + ((total % pageSize == 0) ? 0 : 1));
        } else {
            pages = 0;
        }
        //鍒嗛〉鍚堢悊鍖栵紝閽堝涓嶅悎鐞嗙殑椤电爜鑷姩澶勭悊
        if ((reasonable != null && reasonable) && pageNum > pages) {
            pageNum = pages;
            calculateStartAndEndRow();
        }
    }

    public void setReasonable(Boolean reasonable) {
        if (reasonable == null) {
            return;
        }
        this.reasonable = reasonable;
        //鍒嗛〉鍚堢悊鍖栵紝閽堝涓嶅悎鐞嗙殑椤电爜鑷姩澶勭悊
        if (this.reasonable && this.pageNum <= 0) {
            this.pageNum = 1;
            calculateStartAndEndRow();
        }
    }

    public Boolean getReasonable() {
        return reasonable;
    }

    public Boolean getPageSizeZero() {
        return pageSizeZero;
    }

    public void setPageSizeZero(Boolean pageSizeZero) {
        if (pageSizeZero != null) {
            this.pageSizeZero = pageSizeZero;
        }
    }

    /**
     * 璁＄畻璧锋琛屽彿
     */
    private void calculateStartAndEndRow() {
        this.startRow = this.pageNum > 0 ? (this.pageNum - 1) * this.pageSize : 0;
        this.endRow = this.startRow + this.pageSize * (this.pageNum > 0 ? 1 : 0);
    }

    public boolean isCount() {
        return this.total > NO_SQL_COUNT;
    }

    //澧炲姞閾惧紡璋冪敤鏂规硶

    /**
     * 璁剧疆椤电爜
     *
     * @param pageNum
     * @return
     */
    public Page<E> pageNum(int pageNum) {
        //鍒嗛〉鍚堢悊鍖栵紝閽堝涓嶅悎鐞嗙殑椤电爜鑷姩澶勭悊
        this.pageNum = ((reasonable != null && reasonable) && pageNum <= 0) ? 1 : pageNum;
        return this;
    }

    /**
     * 璁剧疆椤甸潰澶у皬
     *
     * @param pageSize
     * @return
     */
    public Page<E> pageSize(int pageSize) {
        this.pageSize = pageSize;
        calculateStartAndEndRow();
        return this;
    }

    /**
     * 鏄惁鎵цcount鏌ヨ
     *
     * @param count
     * @return
     */
    public Page<E> count(Boolean count) {
        this.total = count ? Page.SQL_COUNT : Page.NO_SQL_COUNT;
        return this;
    }

    /**
     * 璁剧疆鍚堢悊鍖�
     *
     * @param reasonable
     * @return
     */
    public Page<E> reasonable(Boolean reasonable) {
        setReasonable(reasonable);
        return this;
    }

    /**
     * @param pageSizeZero
     * @return
     */
    public Page<E> pageSizeZero(Boolean pageSizeZero) {
        setPageSizeZero(pageSizeZero);
        return this;
    }

    @Override
    public String toString() {
        final StringBuffer sb = new StringBuffer("Page{");
        sb.append("pageNum=").append(pageNum);
        sb.append(", pageSize=").append(pageSize);
        sb.append(", startRow=").append(startRow);
        sb.append(", endRow=").append(endRow);
        sb.append(", total=").append(total);
        sb.append(", pages=").append(pages);
        sb.append(", reasonable=").append(reasonable);
        sb.append(", pageSizeZero=").append(pageSizeZero);
        sb.append('}');
        return sb.toString();
    }
}

示例：

  @Override
  @ResponseBody
  public Response<Behavior> getLessonInfo(@RequestBody GetBehaviorReq behavior) 
  {
      if(null == behavior || null == behavior.getType())
      {
          ServerResult serverResult = new ServerResult();
          serverResult.setResultCode("-1");
          serverResult.setResultMessage("请求参数为空，请检查");
            Response<Behavior> response = new Response<Behavior>();
            response.setServerResult(serverResult);
            return response;
      }
      List<Behavior> infoList = behaviorService.getLessonInfo(behavior);
      Response<Behavior> response = new Response<Behavior>(infoList);
      return response;
  }