快逸報表API直接生成v4統計圖

客戶需求：

之前遇到過客戶希望後臺直接獲取到快逸生成統計圖，當時給客戶解決的方法是通過先在快逸報表中設置統計圖，後臺運算後，獲取到報表單元格的值，轉化成ImageValue對象。

實現準備：

1：瞭解清楚客戶需求報表的統計圖類型，並查詢api獲取到對應的byte值

2：獲取分類軸的值，轉化成數組

3：獲取系列名稱，轉化成數組

4：獲取系列值，轉化成數組

5：獲取標題，轉化成數組

代碼：

package com.api;

import java.io.FileOutputStream;

import java.util.ArrayList;

import java.util.HashSet;

import java.util.Hashtable;

import java.util.List;

import com.raq.dm.Sequence;

import com.runqian.report4.model.expression.graph.ExtGraphCategory;

import com.runqian.report4.model.expression.graph.ExtGraphProperty;

import com.runqian.report4.model.expression.graph.ExtGraphSery;

import com.runqian.report4.model.expression.graph.StatisticGraph;

import com.runqian.report4.usermodel.Palette;

import com.runqian.report4.usermodel.graph.GraphProperty;

import com.runqian.report4.usermodel.graph.ImageValue;

public class V4Graph {

//通過參數決定返回那個統計圖，1<=參數<=20

byte[]img=null;

public byte[] getGraps(int num) {

try{

byte[]types={1,14,12,2,7,13,20,22,21,10,15,8,9,5,6,4,17,16,11,29};

String[]cats=new String[]{“Apr”,”Feb”,”Jan”,”Jun”,”Mar”,”May”};

String[]sers=new String[]{“煤“,”石油“,”沼氣“};

int[]vals=new int[]{23,20,10,21,10,5,21,12,3,26,6,5,23,19,4,20,15,8};

String[] tips = new String[]{“a”,”b”,”c”,”a”,”b”,”c”,”a”,”b”,”c”,”a”,”b”,”c”,”a”,”b”,”c”,”a”,”b”,”c”};

GraphProperty graphProp=new GraphProperty();

graphProp.setImageFormat(GraphProperty.IMAGE_PNG);

graphProp.setType(types[num-1]);

ExtGraphProperty extProp = new ExtGraphProperty(graphProp);

ArrayList categories = new ArrayList();

ExtGraphCategory graphCat = null;

for(int c=0;c<cats.length;c++){

graphCat=new ExtGraphCategory();

graphCat.setName(cats[c]);

ArrayList series = new ArrayList();

for(int s=0;s<sers.length;s++){

ExtGraphSery graphSery = new ExtGraphSery();

graphSery.setName(sers[s]);

graphSery.setValue(vals[(c*3+s)]);

graphSery.setTips(tips[c*3+s]);

series.add(graphSery);

graphCat.setSeries(series);

}

categories.add(graphCat);

}

extProp.setCategories(categories);

// 設置調色板

extProp.setPalette(Palette.getDefaultPalette());

// 計算統計圖

StatisticGraph sg = new StatisticGraph(extProp, 360, 220); // 三個參數分別爲：統計圖屬性，寬度，高度

ImageValue value = sg.calc();

img = value.getValue();

}

catch (Throwable e) {

e.printStackTrace();

}

return img;

}

}

總結：

例子中循環遍歷，生成了20個統計圖，可根據客戶具體需求更改代碼。