获取全国市以及地理坐标，各大坐标系北斗，百度，WGS-84坐标系的转换，有图，有代码

1 先上坐标取到的值：

获取到的坐标部分如下：

'北京市':[116.39564503788,39.92998577808],
            '天津市':[117.21081309155,39.14392990331],
            '上海市':[121.48789948569,31.249161710015],
            '重庆市':[106.53063501341,29.544606108886],
                
'合肥市':[117.28269909168,31.866942260687],
'芜湖市':[118.38410842323,31.366019787543],
'蚌埠市':[117.35707986588,32.929498906698],
'淮南市':[117.01863886329,32.642811823748],
'马鞍山市':[118.51588184662,31.68852815888],
'淮北市':[116.79144742863,33.960023305364],
'铜陵市':[117.81942872881,30.940929694666],
'安庆市':[117.05873877211,30.537897817381],
'黄山市':[118.293569632,29.734434856163],
'滁州市':[118.32457035098,32.317350595384],
'阜阳市':[115.82093225905,32.90121133057],
'宿州市':[116.98869241183,33.636772385781],
'六安市':[116.50525268298,31.755558355198],
'亳州市':[115.78792824512,33.871210565302],
'池州市':[117.49447677159,30.660019248161],
'宣城市':[118.75209631098,30.951642354296],
'福州市':[119.33022110713,26.047125496573],
'厦门市':[118.10388604566,24.489230612469],
'莆田市':[119.07773096396,25.448450136734],
'三明市':[117.64219393404,26.270835279362],
'泉州市':[118.60036234323,24.901652383991],
'漳州市':[117.67620467895,24.517064779808],
'南平市':[118.18188294866,26.643626474198],
'龙岩市':[117.01799673877,25.078685433515],
'宁德市':[119.54208214972,26.656527419159],
'广州市':[113.30764967515,23.120049102076],
'韶关市':[113.59446110744,24.802960311892],
'深圳市':[114.02597365732,22.546053546205],
'珠海市':[113.56244702619,22.256914646126],
'汕头市':[116.72865028834,23.383908453269],
'佛山市':[113.13402563539,23.035094840514],
'江门市':[113.07812534115,22.575116783451],
'湛江市':[110.36506726285,21.257463103764],
'茂名市':[110.93124533068,21.668225718822],
'肇庆市':[112.47965336992,23.078663282929],
'惠州市':[114.41065807997,23.113539852408],
'梅州市':[116.12640309837,24.304570606031],
'汕尾市':[115.3729242894,22.778730500164],
'河源市':[114.71372147587,23.757250850469],
'阳江市':[111.97700975587,21.871517304519],
'清远市':[113.04077334891,23.698468550422],
'潮州市':[116.63007599086,23.661811676517],
'揭阳市':[116.37950085538,23.547999466926],
'云浮市':[112.05094595865,22.937975685537],
'贵阳市':[106.70917709618,26.629906741441],
'六盘水市':[104.85208676007,26.591866060319],
'遵义市':[106.93126031648,27.699961377076],
'安顺市':[105.92826996576,26.228594577737],
'毕节市':[105.33332337117,27.408562131331],
'铜仁市':[109.16855802826,27.674902690624],
'黔西南布依族苗族自治州':[104.90055779825,25.095148055927],
'黔东南苗族侗族自治州':[107.98535257274,26.583991766542],
'黔南布依族苗族自治州':[107.52320511006,26.264535997442],
'海口市':[110.33080184834,20.022071276952],
'三亚市':[109.52277128136,18.257775914897],
'三沙市':[108.52277128136,17.257775914897],

4个直辖市是手动添加上去的

2 坐标系

坐标系相关的知识；上面获取到的是百度坐标系需要转换的如下方法：网盘地址：http://pan.baidu.com/s/1huRBw 感兴趣的可以点击链接下载！

国家规定，军队，国家机关的涉密数据。。。。。。不能使用WGS84坐标系，大家开发项目请注意。

比较专业的坐标相互之间的转换如下：

/*
 * Project Name:Hecha 
 * File Name:CommonCooder.java 
 * Package Name:com.example.hecha 
 * Date:2014-12-5下午2:39:09 
 * Copyright (c) 2014, chinhiyoshi@163.com 陈飞  Rights Reserved. 
 * 
 */
package com.example.hecha;

/*
 * ClassName:CommonCooder  
 * Function:   ADD FUNCTION.  
 * Reason:     ADD REASON.  
 * Date:     2014-12-5 下午2:39:09  
 * @author   cf 
 * @version   
 * @since    JDK 1.6   
 */
public class CommonCooder {

    static double pi = 3.14159265358979324;
    static double a = 6378245.0;
    static double ee = 0.00669342162296594323;
    static double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
    
    //WGS84坐标系转成BD09
    public static String WGS84ToBd09(double gg_lat, double gg_lon) {

        String[] redbstring = transform(gg_lat, gg_lon).split(",");// WGS84 ===>GCj_02

        gg_lon = Double.parseDouble(redbstring[0]);
        gg_lat = Double.parseDouble(redbstring[1]);

        // gcj-02 to bd09  
        double bd_lat;
        double bd_lon;
        double x = gg_lon, y = gg_lat;
        double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);
        double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi);
        bd_lon = z * Math.cos(theta) + 0.0065;
        bd_lat = z * Math.sin(theta) + 0.006;

        System.out.println("BD:" + bd_lat + "," + bd_lon);

        return bd_lon + "," + bd_lat;
    }

    // WGS84 ======> GCj_02
    private static String transform(double wgLat, double wgLon) {
        double mgLat;
        double mgLon;
        String resultString = null;
        if (outOfChina(wgLat, wgLon)) {
            resultString = wgLon + "," + wgLat;
            mgLat = wgLat;
            mgLon = wgLon;
            return resultString;
        }

        double dLat = transformLat(wgLon - 105.0, wgLat - 35.0);
        double dLon = transformLon(wgLon - 105.0, wgLat - 35.0);
        double radLat = wgLat / 180.0 * pi;
        double magic = Math.sin(radLat);
        magic = 1 - ee * magic * magic;
        double sqrtMagic = Math.sqrt(magic);
        dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
        dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
        mgLat = wgLat + dLat;
        mgLon = wgLon + dLon;

        return mgLon + "," + mgLat;
    }

    private static boolean outOfChina(double lat, double lon) {
        if (lon < 72.004 || lon > 137.8347)
            return true;
        if (lat < 0.8293 || lat > 55.8271)
            return true;
        return false;
    }

    private static double transformLat(double x, double y) {
        double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y+ 0.2 * Math.sqrt(Math.abs(x));
        ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
        ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;
        ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
        return ret;
    }

    private static double transformLon(double x, double y) {
        double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1* Math.sqrt(Math.abs(x));
        ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
        ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0;
        ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0
                * pi)) * 2.0 / 3.0;
        return ret;
    }
}