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e47db889 by chiangbt
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update3

1 parent c102032f
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...@@ -3,16 +3,16 @@ ...@@ -3,16 +3,16 @@
3 TiandituDownload主要用于下载天地图数据，其坐标系为CGCS2000. 3 TiandituDownload主要用于下载天地图数据，其坐标系为CGCS2000.
4 4
5 ```java 5 ```java
6 6
7 // 设置要下载的图片存储sqlite路径 7 // 设置要下载的图片存储sqlite路径
8 TiandituDownload tiandituDownload = new TiandituDownload("my.db"); 8 TiandituDownload tiandituDownload = new TiandituDownload("my.db");
9 // 范围起始点（左下角、右上角） 9 // 范围起始点（左下角、右上角）
10 Point pt = new Point(29.76,106.64); 10 Point pt = new Point(29.76,106.64);
11 Point pt2 = new Point(35.33, 108.12); 11 Point pt2 = new Point(35.33, 108.12);
12 // 下载器 12 // 下载器
13 // 2 为最小level，9为最大level 13 // 2 为最小level，9为最大level
14 // TianDiTuTiledMapServiceType.IMG_C 为下载数据类型 14 // TianDiTuTiledMapServiceType.IMG_C 为下载数据类型
15 // 最后一个参数为merge，为true时，会将地图及其注记一并下载融合到一张图片中去 15 // 最后一个参数为merge，为true时，会将地图及其注记一并下载融合到一张图片中去
16 tiandituDownload.Download(pt, pt2, 2,9, TianDiTuTiledMapServiceType.IMG_C, true); 16 tiandituDownload.Download(pt, pt2, 2,9, TianDiTuTiledMapServiceType.IMG_C, true);
17 17
18 ``` 18 ```
...\ No newline at end of file ...\ No newline at end of file
......
...@@ -12,6 +12,7 @@ public class Main{ ...@@ -12,6 +12,7 @@ public class Main{
12 TiandituDownload tiandituDownload = new TiandituDownload("my.db"); 12 TiandituDownload tiandituDownload = new TiandituDownload("my.db");
13 Point pt = new Point(29.76,106.64); 13 Point pt = new Point(29.76,106.64);
14 Point pt2 = new Point(35.33, 108.12); 14 Point pt2 = new Point(35.33, 108.12);
15 tiandituDownload.Download(pt, pt2, 2,9, TianDiTuTiledMapServiceType.VEC_C, true); 15
16 tiandituDownload.Download(pt, pt2, 7,9, TianDiTuTiledMapServiceType.VEC_C, true);
16 } 17 }
17 } 18 }
......
...@@ -16,6 +16,10 @@ import java.sql.*; ...@@ -16,6 +16,10 @@ import java.sql.*;
16 16
17 public class TiandituDownload { 17 public class TiandituDownload {
18 18
19 // 级别
20 int[] level = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20};
21
22 // 分辨率
19 double[] res = { 23 double[] res = {
20 1.40625, 24 1.40625,
21 0.703125, 25 0.703125,
...@@ -39,6 +43,7 @@ public class TiandituDownload { ...@@ -39,6 +43,7 @@ public class TiandituDownload {
39 2.68220901489258E-06, 43 2.68220901489258E-06,
40 1.34110450744629E-06 44 1.34110450744629E-06
41 }; 45 };
46 // 比例尺
42 double[] scale = { 47 double[] scale = {
43 400000000, 48 400000000,
44 295497598.5708346, 49 295497598.5708346,
...@@ -60,69 +65,83 @@ public class TiandituDownload { ...@@ -60,69 +65,83 @@ public class TiandituDownload {
60 4508.93552506767, 65 4508.93552506767,
61 2254.467762533835, 66 2254.467762533835,
62 1127.2338812669175, 67 1127.2338812669175,
63 563.616940 68 563.61694063345875
64 }; 69 };
65 70 // 最小级别
66 int minLevel = 1; 71 int minLevel = 1;
72
73 // 最大级别
67 int maxLevel = 2; 74 int maxLevel = 2;
68 75
69 // 保存数据的sqlite文件路径 76 // 保存数据的sqlite文件路径
70 String dbpath; 77 String dbpath;
71 78
79 // SQLite链接
72 Connection conn = null; 80 Connection conn = null;
73
74 Statement stmt = null; 81 Statement stmt = null;
75 82
76 public TiandituDownload(String dbpath){ 83 public TiandituDownload(String dbpath) {
77 this.dbpath =dbpath; 84 this.dbpath = dbpath;
78 } 85 }
79 86
80 private CalEnv calculateEnv(Point originPoint, int level){ 87 /**
81 int startX = (int) Math.floor((originPoint.getLng() + 180)/(256 * res[level])); 88 *
82 int startY = (int) Math.floor((90 - originPoint.getLat())/(256 * res[level])); 89 * @param originPoint 坐标点
83 if(startX<0)startX = 0; 90 * @param level 级别
84 if(startY<0)startY = 0; 91 * @return 改点在该级别所属的地图瓦片行列号
92 */
93 private CalEnv calculateEnv(Point originPoint, int level) {
94 int startX = (int) Math.floor((originPoint.getLng() + 180) / (256 * res[level]));
95 int startY = (int) Math.floor((90 - originPoint.getLat()) / (256 * res[level]));
96 if (startX < 0) startX = 0;
97 if (startY < 0) startY = 0;
85 98
86 return new CalEnv(startX, startY); 99 return new CalEnv(startX, startY);
87 } 100 }
88 101
89 private void Download(Point minPoint, Point maxPoint, int level, TianDiTuTiledMapServiceType type, boolean merge){ 102 /**
103 *
104 * @param minPoint 下载范围左下角坐标
105 * @param maxPoint 下载范围右上角坐标
106 * @param level 下载级别
107 * @param type 下载数据类型
108 * @param merge 数据与其注记是否融合
109 */
110 private void downloadSingLevelTiles(Point minPoint, Point maxPoint, int level, TianDiTuTiledMapServiceType type, boolean merge) {
90 111
91 try{ 112 try {
92 CalEnv startEnv = calculateEnv(minPoint, level); 113 CalEnv startEnv = calculateEnv(minPoint, level);
93 CalEnv stopEnv = calculateEnv(maxPoint, level); 114 CalEnv stopEnv = calculateEnv(maxPoint, level);
94 115
95 // System.out.println(startEnv.getStartX() + ":" +startEnv.getStartY());
96 // System.out.println(stopEnv.getStartX() + ":" +stopEnv.getStartY());
97 PreparedStatement preparedStatement; 116 PreparedStatement preparedStatement;
98 ResultSet rs; 117 ResultSet rs;
99 118
100 for(int i = startEnv.getStartX(); i <= stopEnv.getStartX(); i++){ 119 for (int i = startEnv.getStartCol(); i <= stopEnv.getStartCol(); i++) {
101 for(int j = stopEnv.getStartY(); j<= startEnv.getStartY(); j++){ 120 for (int j = stopEnv.getStartRow(); j <= startEnv.getStartRow(); j++) {
102 boolean hasData = false; 121 boolean hasData = false;
103 try{ 122 try {
104 // 查询瓦片是否存在 123 // 查询瓦片是否存在
105 String querySQL = "select * from " + type + " where TILELEVEL = " + level + " and TILECOL = " + i + " and TILEROW = " + j; 124 String querySQL = "select * from " + type + " where TILELEVEL = " + level + " and TILECOL = " + i + " and TILEROW = " + j;
106 rs = stmt.executeQuery(querySQL); 125 rs = stmt.executeQuery(querySQL);
107 while(rs.next()){ 126 while (rs.next()) {
108 hasData = true; 127 hasData = true;
109 } 128 }
110 // 如果不存在 129 // 如果不存在则从网络获取
111 if(!hasData){ 130 if (!hasData) {
112 String url = new TDTUrl(level, i, j, type).generatUrl(); 131 String url = new TDTUrl(level, i, j, type).generatUrl();
113 // 获得地图瓦片 132 // 获得地图瓦片数据流
114 byte[] img = getTile(url); 133 byte[] img = getTile(url);
115 System.out.println("正在下载 "+url); 134 System.out.println("正在下载 " + url);
116 135
117 // 如果merge为true，则在下载img_c或vec_c时将其注记图片一并下载 136 // 如果merge为true，则在下载img_c或vec_c时将其注记图片一并下载
118 if(merge) { 137 if (merge) {
119 InputStream img_stream = new ByteArrayInputStream(img); 138 InputStream img_stream = new ByteArrayInputStream(img);
120 BufferedImage bImageFromConvert = ImageIO.read(img_stream); 139 BufferedImage bImageFromConvert = ImageIO.read(img_stream);
121 140
122 String url2 = ""; 141 String url2 = "";
123 if(type == TianDiTuTiledMapServiceType.IMG_C) { 142 if (type == TianDiTuTiledMapServiceType.IMG_C) {
124 url2 = new TDTUrl(level, i, j, TianDiTuTiledMapServiceType.CIA_C).generatUrl(); 143 url2 = new TDTUrl(level, i, j, TianDiTuTiledMapServiceType.CIA_C).generatUrl();
125 }else{ 144 } else {
126 url2 = new TDTUrl(level, i, j, TianDiTuTiledMapServiceType.CVA_C).generatUrl(); 145 url2 = new TDTUrl(level, i, j, TianDiTuTiledMapServiceType.CVA_C).generatUrl();
127 } 146 }
128 byte[] img2 = getTile(url2); 147 byte[] img2 = getTile(url2);
...@@ -140,7 +159,7 @@ public class TiandituDownload { ...@@ -140,7 +159,7 @@ public class TiandituDownload {
140 baos.close(); 159 baos.close();
141 } 160 }
142 // 将数据写入sqlite 161 // 将数据写入sqlite
143 String insertSQL = "INSERT INTO "+ type + "(TILELEVEL,TILECOL,TILEROW,TILEDATA) VALUES (?,?,?,?)"; 162 String insertSQL = "INSERT INTO " + type + "(TILELEVEL,TILECOL,TILEROW,TILEDATA) VALUES (?,?,?,?)";
144 preparedStatement = conn.prepareStatement(insertSQL); 163 preparedStatement = conn.prepareStatement(insertSQL);
145 preparedStatement.setInt(1, level); 164 preparedStatement.setInt(1, level);
146 preparedStatement.setInt(2, i); 165 preparedStatement.setInt(2, i);
...@@ -148,17 +167,27 @@ public class TiandituDownload { ...@@ -148,17 +167,27 @@ public class TiandituDownload {
148 preparedStatement.setBytes(4, img); 167 preparedStatement.setBytes(4, img);
149 preparedStatement.execute(); 168 preparedStatement.execute();
150 } 169 }
151 }catch (Exception e){ 170 } catch (Exception e) {
152 System.out.println(e.getMessage()); 171 System.out.println(e.getMessage());
153 } 172 }
154 } 173 }
155 conn.commit(); 174 conn.commit();
156 } 175 }
157 }catch (Exception e){ 176 } catch (Exception e) {
158 System.out.println(e.getMessage()); 177 System.out.println(e.getMessage());
159 } 178 }
160 } 179 }
161 180
181 /**
182 *
183 * @param minPoint 下载范围左下角坐标
184 * @param maxPoint 下载范围右上角坐标
185 * @param minLevel 下载最小级别
186 * @param maxLevel 下载最大级别
187 * @param type 下载数据类型
188 * @param merge 数据与其注记是否融合
189 * @throws SQLException
190 */
162 public void Download(Point minPoint, Point maxPoint, int minLevel, int maxLevel, TianDiTuTiledMapServiceType type, boolean merge) throws SQLException { 191 public void Download(Point minPoint, Point maxPoint, int minLevel, int maxLevel, TianDiTuTiledMapServiceType type, boolean merge) throws SQLException {
163 try { 192 try {
164 Class.forName("org.sqlite.JDBC"); 193 Class.forName("org.sqlite.JDBC");
...@@ -174,17 +203,23 @@ public class TiandituDownload { ...@@ -174,17 +203,23 @@ public class TiandituDownload {
174 stmt.executeUpdate(sql); 203 stmt.executeUpdate(sql);
175 stmt.close(); 204 stmt.close();
176 205
177 for(int m = minLevel; m<= maxLevel; m++){ 206 for (int m = minLevel; m <= maxLevel; m++) {
178 this.Download(minPoint, maxPoint, m, type, merge); 207 this.downloadSingLevelTiles(minPoint, maxPoint, m, type, merge);
179 } 208 }
180 conn.close(); 209 conn.close();
181 System.out.println("下载完成"); 210 System.out.println("下载完成");
182 211
183 }catch (Exception e){ 212 } catch (Exception e) {
184 213
185 } 214 }
186 } 215 }
187 216
217 /**
218 * 下载网络数据
219 * @param url
220 * @return 图片数据流
221 * @throws Exception
222 */
188 protected byte[] getTile(String url) throws Exception { 223 protected byte[] getTile(String url) throws Exception {
189 byte[] result = null; 224 byte[] result = null;
190 try { 225 try {
......
1 package utils; 1 package utils;
2 2
3 /**
4 * 范围计算后的Row与Col类
5 */
3 public class CalEnv { 6 public class CalEnv {
4 7
5 private int startX; 8 private int startCol;
6 9
7 private int startY; 10 private int startRow;
8 11
9 public CalEnv(int startX, int startY) { 12 public CalEnv(int startX, int startY) {
10 this.startX = startX; 13 this.startCol = startX;
11 this.startY = startY; 14 this.startRow = startY;
12 } 15 }
13 16
14 public int getStartX() { 17 public int getStartCol() {
15 return startX; 18 return startCol;
16 } 19 }
17 20
18 public void setStartX(int startX) { 21 public void setStartCol(int startCol) {
19 this.startX = startX; 22 this.startCol = startCol;
20 } 23 }
21 24
22 public int getStartY() { 25 public int getStartRow() {
23 return startY; 26 return startRow;
24 } 27 }
25 28
26 public void setStartY(int startY) { 29 public void setStartRow(int startRow) {
27 this.startY = startY; 30 this.startRow = startRow;
28 } 31 }
29 } 32 }
......
1 package utils; 1 package utils;
2 2
3 /**
4 * 坐标点类
5 */
3 public class Point { 6 public class Point {
4 7
5 private double lat; 8 private double lat;
......