JAVA使用geotools讀取shape格式文件的方法
更新時間：2020年03月25日 17:04:48 作者：摘星族
這篇文章主要介紹了JAVA使用geotools讀取shape格式文件的方法，本文通過實例代碼給大家介紹的非常詳細，對大家的學習或工作具有一定的參考借鑒價值，需要的朋友可以參考下
先看下JAVA用geotools讀取shape格式文件
Shapefile屬于一種矢量圖形格式，它能夠保存幾何圖形的位置及相關屬性。但這種格式沒法存儲地理數據的拓撲信息。
其中，要組成一個Shapefile，有三個文件是必不可少的，它們分別是".shp", ".shx"與 ".dbf"文件
- .shp— 圖形格式，用于保存元素的幾何實體。
- .shx— 圖形索引格式。幾何體位置索引，記錄每一個幾何體在shp文件之中的位置，能夠加快向前或向后搜索一個幾何體的效率。
- .dbf— 屬性數據格式，以dBase IV的數據表格式存儲每個幾何形狀的屬性數據。
下面將介紹如何通過Java讀取Shape文件中的內容信息
我們的pom文件
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.herbert.geotool</groupId> <artifactId>geo</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-shapefile</artifactId> <version>19.2</version> <scope>system</scope> </dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-opengis</artifactId> <version>19.2</version> </dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-data</artifactId> <version>19.2</version> </dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-api</artifactId> <version>19.2</version> </dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-main</artifactId> <version>19.2</version> </dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-metadata</artifactId> <version>19.2</version> </dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-referencing</artifactId> <version>19.2</version> </dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-geojson</artifactId> <version>19.2</version> </dependency> <dependency> <groupId>org.json.simple</groupId> <artifactId>json-simple</artifactId> <version>1.1</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-pool</artifactId> <version>1.5.4</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>com.vividsolutions</groupId> <artifactId>jts</artifactId> <version>1.13</version> </dependency> </dependencies> </project>
具體Java代碼
package com.herbert.geotoool.util;
import org.geotools.data.shapefile.ShapefileDataStore;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.data.simple.SimpleFeatureSource;
import org.geotools.geojson.feature.FeatureJSON;
import org.opengis.feature.simple.SimpleFeature;
import java.io.File;
import java.io.IOException;
import java.io.StringWriter;
import java.nio.charset.Charset;
/**
* @author ：Herbert
* @date ：Created in 2019/12/26 17:01
* @description：
* @modified By：
* @version: $
*/
public class ShapeModel {
public static void main(String[] args) throws IOException {
long start = System.currentTimeMillis();
String SHAPE_FILE = "F:\\MapData\\gisMap\\xian\\街道界線.shp"; // ShapeFile全路徑
// 使用GeoTools讀取ShapeFile文件
File shapeFile = new File(SHAPE_FILE);
ShapefileDataStore store = new ShapefileDataStore(shapeFile.toURI().toURL());
//設置編碼
Charset charset = Charset.forName("GBK");
store.setCharset(charset);
SimpleFeatureSource sfSource = store.getFeatureSource();
SimpleFeatureIterator sfIter = sfSource.getFeatures().features();
// 從ShapeFile文件中遍歷每一個Feature，然后將Feature轉為GeoJSON字符串
while (sfIter.hasNext()) {
SimpleFeature feature = (SimpleFeature) sfIter.next();
// Feature轉GeoJSON
FeatureJSON fjson = new FeatureJSON();
StringWriter writer = new StringWriter();
fjson.writeFeature(feature, writer);
String sjson = writer.toString();
System.out.println("sjson===== >>>> " + sjson);
}
System.out.println("數據導入完成，共耗時"+(System.currentTimeMillis() - start)+"ms");
}
}
讀取數據顯示：
補充：JAVA 根據數據庫表內容生產樹結構JSON數據的實例代碼
1、利用場景
組織機構樹，通常會有組織機構表，其中有code(代碼),pcode(上級代碼),name(組織名稱)等字段
2、構造數據（以下數據并不是組織機構數據，而純屬本人胡編亂造的數據）
List<Tree<Test>> trees = new ArrayList<Tree<Test>>();
tests.add(new Test("0", "", "關于本人"));
tests.add(new Test("1", "0", "技術學習"));
tests.add(new Test("2", "0", "興趣"));
tests.add(new Test("3", "1", "JAVA"));
tests.add(new Test("4", "1", "oracle"));
tests.add(new Test("5", "1", "spring"));
tests.add(new Test("6", "1", "springmvc"));
tests.add(new Test("7", "1", "fastdfs"));
tests.add(new Test("8", "1", "linux"));
tests.add(new Test("9", "2", "騎行"));
tests.add(new Test("10", "2", "吃喝玩樂"));
tests.add(new Test("11", "2", "學習"));
tests.add(new Test("12", "3", "String"));
tests.add(new Test("13", "4", "sql"));
tests.add(new Test("14", "5", "ioc"));
tests.add(new Test("15", "5", "aop"));
tests.add(new Test("16", "1", "等等"));
tests.add(new Test("17", "2", "等等"));
tests.add(new Test("18", "3", "等等"));
tests.add(new Test("19", "4", "等等"));
tests.add(new Test("20", "5", "等等"));
3、源碼
Tree.java
package pers.kangxu.datautils.bean.tree;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import com.alibaba.fastjson.JSON;
/**
* tree TODO <br>
*
* @author kangxu2 2017-1-7
*
*/
public class Tree<T> {
/**
* 節(jié)點ID
*/
private String id;
/**
* 顯示節(jié)點文本
*/
private String text;
/**
* 節(jié)點狀態(tài)，open closed
*/
private String state = "open";
/**
* 節(jié)點是否被選中 true false
*/
private boolean checked = false;
/**
* 節(jié)點屬性
*/
private List<Map<String, Object>> attributes;
/**
* 節(jié)點的子節(jié)點
*/
private List<Tree<T>> children = new ArrayList<Tree<T>>();
/**
* 父ID
*/
private String parentId;
/**
* 是否有父節(jié)點
*/
private boolean isParent = false;
/**
* 是否有子節(jié)點
*/
private boolean isChildren = false;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
public List<Map<String, Object>> getAttributes() {
return attributes;
}
public void setAttributes(List<Map<String, Object>> attributes) {
this.attributes = attributes;
}
public List<Tree<T>> getChildren() {
return children;
}
public void setChildren(List<Tree<T>> children) {
this.children = children;
}
public boolean isParent() {
return isParent;
}
public void setParent(boolean isParent) {
this.isParent = isParent;
}
public boolean isChildren() {
return isChildren;
}
public void setChildren(boolean isChildren) {
this.isChildren = isChildren;
}
public String getParentId() {
return parentId;
}
public void setParentId(String parentId) {
this.parentId = parentId;
}
public Tree(String id, String text, String state, boolean checked,
List<Map<String, Object>> attributes, List<Tree<T>> children,
boolean isParent, boolean isChildren, String parentID) {
super();
this.id = id;
this.text = text;
this.state = state;
this.checked = checked;
this.attributes = attributes;
this.children = children;
this.isParent = isParent;
this.isChildren = isChildren;
this.parentId = parentID;
}
public Tree() {
super();
}
@Override
public String toString() {
return JSON.toJSONString(this);
}
}
BuildTree.java
package pers.kangxu.datautils.common.tree;
import java.util.ArrayList;
import java.util.List;
import pers.kangxu.datautils.bean.tree.Tree;
/**
* 構建tree
* TODO
* <br>
* @author kangxu2 2017-1-7
*
*/
public class BuildTree {
/**
*
* TODO
* <br>
* @author kangxu2 2017-1-7
*
* @param nodes
* @return
*/
public static <T> Tree<T> build(List<Tree<T>> nodes) {
if(nodes == null){
return null;
}
List<Tree<T>> topNodes = new ArrayList<Tree<T>>();
for (Tree<T> children : nodes) {
String pid = children.getParentId();
if (pid == null || "".equals(pid)) {
topNodes.add(children);
continue;
}
for (Tree<T> parent : nodes) {
String id = parent.getId();
if (id != null && id.equals(pid)) {
parent.getChildren().add(children);
children.setParent(true);
parent.setChildren(true);
continue;
}
}
}
Tree<T> root = new Tree<T>();
if (topNodes.size() == 0) {
root = topNodes.get(0);
} else {
root.setId("-1");
root.setParentId("");
root.setParent(false);
root.setChildren(true);
root.setChecked(true);
root.setChildren(topNodes);
root.setText("頂級節(jié)點");
}
return root;
}
}
BuildTreeTester.java
package pers.kangxu.datautils.test;
import java.util.ArrayList;
import java.util.List;
import pers.kangxu.datautils.bean.tree.Tree;
import pers.kangxu.datautils.common.tree.BuildTree;
public class BuildTreeTester {
public static void main(String[] args) {
List<Tree<Test>> trees = new ArrayList<Tree<Test>>();
List<Test> tests = new ArrayList<Test>();
tests.add(new Test("0", "", "關于本人"));
tests.add(new Test("1", "0", "技術學習"));
tests.add(new Test("2", "0", "興趣"));
tests.add(new Test("3", "1", "JAVA"));
tests.add(new Test("4", "1", "oracle"));
tests.add(new Test("5", "1", "spring"));
tests.add(new Test("6", "1", "springmvc"));
tests.add(new Test("7", "1", "fastdfs"));
tests.add(new Test("8", "1", "linux"));
tests.add(new Test("9", "2", "騎行"));
tests.add(new Test("10", "2", "吃喝玩樂"));
tests.add(new Test("11", "2", "學習"));
tests.add(new Test("12", "3", "String"));
tests.add(new Test("13", "4", "sql"));
tests.add(new Test("14", "5", "ioc"));
tests.add(new Test("15", "5", "aop"));
tests.add(new Test("16", "1", "等等"));
tests.add(new Test("17", "2", "等等"));
tests.add(new Test("18", "3", "等等"));
tests.add(new Test("19", "4", "等等"));
tests.add(new Test("20", "5", "等等"));
for (Test test : tests) {
Tree<Test> tree = new Tree<Test>();
tree.setId(test.getId());
tree.setParentId(test.getPid());
tree.setText(test.getText());
trees.add(tree);
}
Tree<Test> t = BuildTree.build(trees);
System.out.println(t);
}
}
class Test {
private String id;
private String pid;
private String text;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getPid() {
return pid;
}
public void setPid(String pid) {
this.pid = pid;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Test(String id, String pid, String text) {
super();
this.id = id;
this.pid = pid;
this.text = text;
}
public Test() {
super();
}
@Override
public String toString() {
return "Test [id=" + id + ", pid=" + pid + ", text=" + text + "]";
}
}
4、運行結果
JSON數據：
{
"checked": true,
"children": [
{
"checked": false,
"children": [
{
"checked": false,
"children": [
{
"checked": false,
"children": [
{
"checked": false,
"children": [],
"id": "12",
"parent": true,
"parentId": "3",
"state": "open",
"text": "String"
},
{
"checked": false,
"children": [],
"id": "18",
"parent": true,
"parentId": "3",
"state": "open",
"text": "等等"
}
],
"id": "3",
"parent": true,
"parentId": "1",
"state": "open",
"text": "JAVA"
},
{
"checked": false,
"children": [
{
"checked": false,
"children": [],
"id": "13",
"parent": true,
"parentId": "4",
"state": "open",
"text": "sql"
},
{
"checked": false,
"children": [],
"id": "19",
"parent": true,
"parentId": "4",
"state": "open",
"text": "等等"
}
],
"id": "4",
"parent": true,
"parentId": "1",
"state": "open",
"text": "oracle"
},
{
"checked": false,
"children": [
{
"checked": false,
"children": [],
"id": "14",
"parent": true,
"parentId": "5",
"state": "open",
"text": "ioc"
},
{
"checked": false,
"children": [],
"id": "15",
"parent": true,
"parentId": "5",
"state": "open",
"text": "aop"
},
{
"checked": false,
"children": [],
"id": "20",
"parent": true,
"parentId": "5",
"state": "open",
"text": "等等"
}
],
"id": "5",
"parent": true,
"parentId": "1",
"state": "open",
"text": "spring"
},
{
"checked": false,
"children": [],
"id": "6",
"parent": true,
"parentId": "1",
"state": "open",
"text": "springmvc"
},
{
"checked": false,
"children": [],
"id": "7",
"parent": true,
"parentId": "1",
"state": "open",
"text": "fastdfs"
},
{
"checked": false,
"children": [],
"id": "8",
"parent": true,
"parentId": "1",
"state": "open",
"text": "linux"
},
{
"checked": false,
"children": [],
"id": "16",
"parent": true,
"parentId": "1",
"state": "open",
"text": "等等"
}
],
"id": "1",
"parent": true,
"parentId": "0",
"state": "open",
"text": "技術學習"
},
{
"checked": false,
"children": [
{
"checked": false,
"children": [],
"id": "9",
"parent": true,
"parentId": "2",
"state": "open",
"text": "騎行"
},
{
"checked": false,
"children": [],
"id": "10",
"parent": true,
"parentId": "2",
"state": "open",
"text": "吃喝玩樂"
},
{
"checked": false,
"children": [],
"id": "11",
"parent": true,
"parentId": "2",
"state": "open",
"text": "學習"
},
{
"checked": false,
"children": [],
"id": "17",
"parent": true,
"parentId": "2",
"state": "open",
"text": "等等"
}
],
"id": "2",
"parent": true,
"parentId": "0",
"state": "open",
"text": "興趣"
}
],
"id": "0",
"parent": false,
"parentId": "",
"state": "open",
"text": "關于本人"
}
],
"id": "-1",
"parent": false,
"parentId": "",
"state": "open",
"text": "頂級節(jié)點"
}
總結
到此這篇關于JAVA使用geotools讀取shape格式文件的方法的文章就介紹到這了,更多相關java geotools讀取shape格式內容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關文章希望大家以后多多支持腳本之家！
您可能感興趣的文章:
相關文章
java天數計算函數(當前月天數、某月總天數及某月剩余天數)4種方法實現(xiàn)代碼
日常開發(fā)中會遇到關于日期的計算,比如當月的天數、兩日期之間的天數、當月剩余天數等等,這篇文章主要給大家介紹了關于java天數計算函數(當前月天數、某月總天數及某月剩余天數)4種方法實現(xiàn)的相關資料,需要的朋友可以參考下2023-10-10
這篇文章主要介紹了Spring@Value使用獲取配置信息為null的操作，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教2021-07-07
這篇文章主要介紹了常見JavaWeb安全問題和解決方案,文中通過示例代碼介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值,需要的朋友可以參考下2020-03-03
springboot中使用ConstraintValidatorContext驗證兩個字段內容相同
開發(fā)修改密碼功能時,通過ConstraintValidator校驗新密碼和確認新密碼的一致性,首先定義Matches注解和DTO對象,然后創(chuàng)建MatchesValidator類實現(xiàn)驗證邏輯,對springboot驗證字段內容相同問題感興趣的朋友一起看看吧2024-10-10
舉例講解Java的Jackson庫中ObjectMapper類的使用
這篇文章主要介紹了舉例講解Java的Jackson庫中ObjectMapper類的使用,Jackson庫通常被用來實現(xiàn)Java的對象和JSON之間的轉換功能,需要的朋友可以參考下2016-01-01
如何在SpringBoot項目中使用Oracle11g數據庫
這篇文章主要介紹了在SpringBoot項目中使用Oracle11g數據庫的操作，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教2021-06-06
java 8 lambda表達式list操作分組、過濾、求和、最值、排序、去重代碼詳解
java8的lambda表達式提供了一些方便list操作的方法,主要涵蓋分組、過濾、求和、最值、排序、去重,本文通過實例代碼給大家介紹的非常詳細,對大家的學習或工作具有一定的參考借鑒價值,需要的朋友參考下吧2024-01-01
這篇文章主要為大家介紹了Java和Android崩潰捕獲機制詳解，有需要的朋友可以借鑒參考下，希望能夠有所幫助，祝大家多多進步，早日升職加薪2023-07-07
一個過程或函數在其定義或說明中有直接或間接調用自身的一種方法，它通常把一個大型復雜的問題層層轉化為一個與原問題相似的規(guī)模較小的問題來求解,需要的朋友可以參考下2012-11-11
這篇文章主要為大家詳細介紹了如何使用java實現(xiàn)json字符串格式化處理的工具類,文中的示例代碼簡潔易懂,感興趣的小伙伴可以跟隨小編一起學習一下2024-01-01