JSON转文件
createJsonFile
package util;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
/**
* Created on 2018/6/21.
*
* @desc JSON转file
*/
public class JsonToFile {
/**
* JSON文件
*
* @param jsonString JSON字符串
* @param filePath 文件路径
* @param fileName 文件名
* @return JSON文件
*/
public static boolean createJsonFile(String jsonString, String filePath, String fileName) {
// 文件生成否
boolean flag = true;
// 拼接文件完整路径
String fullPath = filePath + File.separator;
// 生JSON文件
try {
// 创新文件
File file = new File(fullPath, fileName);
if (!file.getParentFile().exists()) {
// 父目录不存则创父目录
file.getParentFile().mkdirs();
}
if (file.exists()) {
// 已存删旧文件
file.delete();
}
file.createNewFile();
// 格式化JSON字符串
jsonString = JsonFormat.formatJson(jsonString);
// 格式化后字符串写入文件
Writer write = new OutputStreamWriter(new FileOutputStream(file), "UTF-8");
write.write(jsonString);
write.flush();
write.close();
} catch (Exception e) {
flag = false;
e.printStackTrace();
}
// 返成否
return flag;
}
}
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JsonFormat
package util;
/**
* Created on 2018/6/21.
*
* @desc JSON格式化
*/
public class JsonFormat {
/**
* 格式化JSON字符串
*
* @param json 未格式化JSON字符串
* @return 格式化JSON字符串
*/
public static String formatJson(String json) {
StringBuilder result = new StringBuilder();
int length = json.length();
int number = 0;
char key;
// 遍历输入字符串
for (int i = 0; i < length; i++) {
// 一【当前字符】
key = json.charAt(i);
// 二【当前字符前是括号/花括号】
if ((key == '[') || (key == '{')) {
// （1）前仍有字符且“:”，打印换行缩进
if ((i - 1 > 0) && (json.charAt(i - 1) == ':')) {
result.append('\n');
result.append(indent(number));
}
// （2）打印当前字符
result.append(key);
// （3）前方括号/花括号则后换行
result.append('\n');
// （4）每现一次前方括号/花括号，缩进次数增一
number++;
result.append(indent(number));
// （5）下次循环
continue;
}
// 三【当前字符后方括号/花括号】
if ((key == ']') || (key == '}')) {
// （1）后方括号/花括号则前换行
result.append('\n');
// （2）每现一次后方括号/花括号，缩进次数减一
number--;
result.append(indent(number));
// （3）打印当前字符
result.append(key);
// （4）当前字符后还有字符且不为“,”
if (((i + 1) < length) && (json.charAt(i + 1) != ',')) {
result.append('\n');
}
// （5）下次循环
continue;
}
// 四【当前字符逗号，逗号后换行缩进，不改缩进次数】
if ((key == ',')) {
result.append(key);
result.append('\n');
result.append(indent(number));
continue;
}
// 五【打印当前字符】
result.append(key);
}
return result.toString();
}
/**
* 返指定次数的缩进字符串（每次缩三空格，即SPACE）
*
* @param number 缩进次数
* @return 指定缩进次数的字符串
*/
private static String indent(int number) {
StringBuilder result = new StringBuilder();
for (int i = 0; i < number; i++) {
String space = " ";
result.append(space);
}
return result.toString();
}
}
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主代码
JsonToFile.createJsonFile(JsonFormat.formatJson(response), getContext().getExternalFilesDir("DfsDataSync").getAbsolutePath(), "ProjectDepartmentTeamNumberWellNumber.json");
App.azCache().put(Flag.PROJECT_DEPARTMENT_TEAM_NUMBER_WELL_NUMBER_FILE_PATH, getContext().getExternalFilesDir("DfsDataSync").getAbsolutePath() + File.separator + "ProjectDepartmentTeamNumberWellNumber.json");
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文件转JSON
JsonTransform
package util;
import android.content.Context;
import android.content.res.AssetManager;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
/**
* Created on 2018/4/3.
*
* @author xxx
* @desc JSON转化
*/
public class JsonTransform {
/**
* 文件转JSON
*
* @param filePath 文件路径
* @return JSON
*/
public static String jsonTransformFromFile(String filePath) {
File file = new File(filePath);
StringBuilder stringBuilder = new StringBuilder();
try {
FileInputStream fileInputStream = new FileInputStream(file);
BufferedReader bf = new BufferedReader(new InputStreamReader(fileInputStream));
String line;
while ((line = bf.readLine()) != null) {
stringBuilder.append(line);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return stringBuilder.toString();
}
/**
* assets转JSON
*
* @param context 上下文
* @param assetsPath assets路径
* @return JSON
*/
public String jsonTransformFromAssets(Context context, String assetsPath) {
StringBuilder stringBuilder = new StringBuilder();
try {
AssetManager assetManager = context.getAssets();
BufferedReader bf = new BufferedReader(new InputStreamReader(assetManager.open(assetsPath)));
String line;
while ((line = bf.readLine()) != null) {
stringBuilder.append(line);
}
} catch (IOException e) {
e.printStackTrace();
}
return stringBuilder.toString();
}
}
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主代码一（三级联动）
package data;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import util.JsonParse;
import util.JsonTransform;
/**
* Created on 2018/6/26.
*
* @desc 项目部/对号/井号联动
* {
* "第五项目部": {
* "40527": [
* "苏6-8-23",
* "苏6-8-25H1"
* ]
* }
* "第一项目部": {
* "30109": [
* "白加218-341",
* "郭6-03j"
* ]
* }
* }
*/
public class ProDepTnWnLinkage {
/**
* 项目部
*
* @param filePath 文件路径
* @return 项目部
*/
public static List<String> projectDepartment(String filePath) {
List<String> list = new ArrayList<>();
String jsonString = JsonTransform.jsonTransformFromFile(filePath);
try {
JSONObject jsonObject = new JSONObject(jsonString);
Iterator iterator = jsonObject.keys();
while (iterator.hasNext()) {
String key = (String) iterator.next();
list.add(key);
}
} catch (JSONException e) {
e.printStackTrace();
}
return list;
}
/**
* 据项目部获队号
*
* @param filePath 文件路径
* @param projectDepartment 项目部
* @return 队号
*/
public static List<String> teamNumberBaseOnProjectDepartment(String filePath, String projectDepartment) {
List<String> list = new ArrayList<>();
String jsonString = JsonTransform.jsonTransformFromFile(filePath);
try {
// 项目部
JSONObject projectDepartmentJsonObject = new JSONObject(jsonString);
Iterator projectDepartmentIterator = projectDepartmentJsonObject.keys();
while (projectDepartmentIterator.hasNext()) {
String projectDepartmentKey = (String) projectDepartmentIterator.next();
if (projectDepartment != null && !"".equals(projectDepartment) && projectDepartmentKey.equals(projectDepartment)) {
// 队号
JSONObject teamNumberJsonObject = (JSONObject) projectDepartmentJsonObject.get(projectDepartmentKey);
Iterator teamNumberIterator = teamNumberJsonObject.keys();
while (teamNumberIterator.hasNext()) {
String teamNumberKey = (String) teamNumberIterator.next();
list.add(teamNumberKey);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return list;
}
/**
* 据项目部对号获井号
*
* @param filePath 文件路径
* @param projectDepartment 项目部
* @param teamNumber 对号
* @return 井号
*/
public static List<String> wellNumberBaseOnProjectDepartmentTeamNumber(String filePath, String projectDepartment, String teamNumber) {
List<String> list = new ArrayList<>();
String jsonString = JsonTransform.jsonTransformFromFile(filePath);
try {
// 项目部
JSONObject projectDepartmentJsonObject = new JSONObject(jsonString);
Iterator projectDepartmentIterator = projectDepartmentJsonObject.keys();
while (projectDepartmentIterator.hasNext()) {
String projectDepartmentKey = (String) projectDepartmentIterator.next();
if (projectDepartment != null && !"".equals(projectDepartment) && projectDepartmentKey.equals(projectDepartment)) {
// 队号
JSONObject teamNumberJsonObject = (JSONObject) projectDepartmentJsonObject.get(projectDepartmentKey);
Iterator teamNumberIterator = teamNumberJsonObject.keys();
while (teamNumberIterator.hasNext()) {
String teamNumberKey = (String) teamNumberIterator.next();
if (teamNumber != null && !"".equals(teamNumber) && teamNumber.equals(teamNumberKey)) {
// 井号
Object wellNumberObject = teamNumberJsonObject.get(teamNumberKey);
JsonArray jsonArray = JsonParse.noHeaderArrayParse(wellNumberObject.toString());
for (JsonElement jsonElement : jsonArray) {
list.add(jsonElement.toString());
}
}
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return list;
}
}
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主代码二（两级联动）
package data;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import util.JsonParse;
import util.JsonTransform;
/**
* Created on 2018/6/27.
*
* @desc 施工类型/井型联动
* {
* "常规水平井": [
* "三开水平井",
* "二开水平井",
* "大位移定向井"
* ],
* "常规井": [
* "二开水平井",
* "定向井",
* "定向气井",
* "直井"
* ]
* }
*/
public class ConstructionTypeWellTypeLinkage {
/**
* 施工类型
*
* @param filePath 文件路径
* @return 施工类型
*/
public static List<String> constructionType(String filePath) {
List<String> list = new ArrayList<>();
String jsonString = JsonTransform.jsonTransformFromFile(filePath);
try {
JSONObject jsonObject = new JSONObject(jsonString);
Iterator iterator = jsonObject.keys();
while (iterator.hasNext()) {
String key = (String) iterator.next();
list.add(key);
}
} catch (JSONException e) {
e.printStackTrace();
}
return list;
}
/**
* 井型
*
* @param filePath 文件路径
* @return 井型
*/
public static List<String> wellTypeBaseOnConstructionType(String filePath, String constructionType) {
List<String> list = new ArrayList<>();
String jsonString = JsonTransform.jsonTransformFromFile(filePath);
try {
// 施工类型
JSONObject constructionTypeJsonObject = new JSONObject(jsonString);
Iterator iterator = constructionTypeJsonObject.keys();
while (iterator.hasNext()) {
String constructionTypeKey = (String) iterator.next();
if (constructionType != null && !"".equals(constructionType) && constructionType.equals(constructionTypeKey)) {
// 井型
Object wellTypeObject = constructionTypeJsonObject.get(constructionTypeKey);
JsonArray jsonArray = JsonParse.noHeaderArrayParse(wellTypeObject.toString());
for (JsonElement jsonElement : jsonArray) {
list.add(jsonElement.toString());
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return list;
}
}
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