fastjson解析文本
文本中的json格式
20170215 18:00:00.001-{"visitTime":"1487152800001","ip":"xx.xxx.xxx.xxx","params":"{\"encode\":\"utf-8\",\"xxx\":\"0.0\",\"xxxx\":\"6869679\",\"resType\":\"json\",\"ak\":\"xxxxxxxxxxxxxxxxxxxxxxx\",\"xxx\":\"98\",\"uri\":\"/xx/xxx\",\"out_coord_type\":\"xxx\",\"coord_type\":\"xxxx\",\"domain\":null,\"location\":\"xxxx,xxxxx\",\"enc\":\"utf-8\",\"pois\":\"1\"}","device":"xxxxxx","sid":"xxxx"}
代码(用的是阿里的fastjson包)
1 package com.entity; 2 import java.io.BufferedReader; 3 import java.io.BufferedWriter; 4 import java.io.File; 5 import java.io.FileNotFoundException; 6 import java.io.FileOutputStream; 7 import java.io.FileReader; 8 import java.io.FileWriter; 9 import java.io.IOException; 10 import java.io.PrintStream; 11 import java.math.BigDecimal; 12 import java.text.DecimalFormat; 13 14 import org.junit.Test; 15 16 import com.alibaba.fastjson.JSON; 17 import com.alibaba.fastjson.JSONObject; 18 19 public class ReadAndWrite { 20 public static void main(String[] args) { 21 excute("F:\\xxxx.log"); 22 } 23 public static void excute(String path){ 24 File file = new File(path); 25 BufferedReader reader = null; 26 String laststr = ""; 27 try { 28 //System.out.println("以行为单位读取文件内容，一次读一整行："); 29 reader = new BufferedReader(new FileReader(file)); 30 String tempString = null; 31 int line = 1; 32 //一次读入一行，直到读入null为文件结束 33 while ((tempString = reader.readLine())!= null) { 34 //显示行号 35 //System.out.println("line " + line + ": " + tempString); 36 JSONObject parseObject = JSON.parseObject(tempString); 37 String string = parseObject.get("params").toString(); 38 JSONObject parseObject2 = JSON.parseObject(string); 39 40 //活动车辆id 41 String carID; 42 if(parseObject2.get("vhcid")==null){ 43 String ip=parseObject.get("ip").toString(); 44 String carID1=MD5Utils.md5(ip).substring(0, 5); 45 int parseInt = Integer.parseInt(carID1, 16)+10000000; 46 carID=String.valueOf(parseInt); 47 }else{ 48 carID=parseObject2.get("vhcid").toString(); 49 } 50 51 //获得定位时间 52 String UTC1 = parseObject.get("visitTime").toString(); 53 long parseLong = Long.parseLong(UTC1); 54 55 double parse=parseLong/1000; 56 int parseInt=(int)parse; 57 String UTC=String.valueOf(parseInt); 58 //获得纬度和经度 59 String du; 60 if(parseObject2.get("location")!=null){ 61 String du1=parseObject2.get("location").toString(); 62 String[] split = du1.split(","); 63 BigDecimal bd = new BigDecimal(split[0]); 64 BigDecimal multiply = bd.multiply(new BigDecimal(100000)); 65 DecimalFormat dcmFmt = new DecimalFormat("0.0"); 66 //System.out.println(dcmFmt.format(multiply)); 67 BigDecimal bd1 = new BigDecimal(split[1]); 68 BigDecimal multiply1 = bd1.multiply(new BigDecimal(100000)); 69 DecimalFormat dcmFmt1 = new DecimalFormat("0.0"); 70 //System.out.println(dcmFmt1.format(multiply1)); 71 72 du=dcmFmt.format(multiply).substring(0,dcmFmt.format(multiply).length()-2 )+","+dcmFmt1.format(multiply1).substring(0, dcmFmt1.format(multiply1).length()-2); 73 74 }else if(parseObject2.get("coords")!=null){ 75 String du1=parseObject2.get("coords").toString(); 76 String[] split = du1.split(","); 77 BigDecimal bd = new BigDecimal(split[0]); 78 BigDecimal multiply = bd.multiply(new BigDecimal(100000)); 79 DecimalFormat dcmFmt = new DecimalFormat("0.0"); 80 //System.out.println(dcmFmt.format(multiply)); 81 BigDecimal bd1 = new BigDecimal(split[1]); 82 BigDecimal multiply1 = bd1.multiply(new BigDecimal(100000)); 83 DecimalFormat dcmFmt1 = new DecimalFormat("0.0"); 84 //System.out.println(dcmFmt1.format(multiply1)); 85 du=dcmFmt.format(multiply).substring(0,dcmFmt.format(multiply).length()-2 )+","+dcmFmt1.format(multiply1).substring(0, dcmFmt1.format(multiply1).length()-2); 86 }else{ 87 du="00000000,00000000"; 88 } 89 90 //获得速度 91 String speed; 92 if(parseObject2.get("speed")==null){ 93 speed="0"; 94 }else{ 95 String speed1=parseObject2.get("speed").toString(); 96 int db3=(int)Double.parseDouble(speed1); 97 speed=String.valueOf(db3); 98 } 99 100 //获得方向 101 String head; 102 if(parseObject2.get("direction")!=null){ 103 String head1=parseObject2.get("direction").toString(); 104 int db3=(int)Double.parseDouble(head1); 105 head=String.valueOf(db3); 106 }else if(parseObject2.get("dir")!=null){ 107 String head1=parseObject2.get("dir").toString(); 108 int db3=(int)Double.parseDouble(head1); 109 head=String.valueOf(db3); 110 }else{ 111 head="0"; 112 } 113 114 115 116 //获得状态 117 String status="1"; 118 //获得接收时间 119 String time=UTC; 120 //拼接字符串 121 FileWriter fw = new FileWriter("F:\\mspVisitLog20170223.txt", true); 122 BufferedWriter bw = new BufferedWriter(fw); 123 if(du!="00000000,00000000"){ 124 StringBuilder sb = new StringBuilder(); 125 sb.append(carID).append(",").append(UTC).append(",").append(du).append(",").append(speed).append(",").append(head).append(",").append(status).append(",").append(time); 126 String message = sb.toString(); 127 //bw.append("在已有的基础上添加字符串"); 128 bw.write(message+"\r\n");// 往已有的文件上添加字符串 129 //bw.write("\r\n"); 130 //System.out.println(message); 131 } 132 133 134 line ++; 135 System.out.println(line); 136 bw.close(); 137 fw.close(); 138 } 139 reader.close(); 140 } catch (IOException e) { 141 e.printStackTrace(); 142 } finally { 143 144 if (reader != null) { 145 try { 146 reader.close(); 147 } catch (IOException e1) { 148 } 149 } 150 } 151 } 152 153 @Test 154 public void WriteStringToFile() { 155 //for(int i=0;i<=5;i++){ 156 try { 157 //File file = new File("F:\\test.txt"); 158 // PrintStream ps = new PrintStream(new FileOutputStream(file)); 159 // ps.println("http://www.jb51.net");// 往文件里写入字符串 160 // ps.append("http://www.jb51.net");// 在已有的基础上添加字符串 161 FileWriter fw = new FileWriter("F:\\test.txt", true); 162 BufferedWriter bw = new BufferedWriter(fw); 163 //bw.append("在已有的基础上添加字符串"); 164 bw.write("abc\r\n");// 往已有的文件上添加字符串 165 bw.write("def\r\n"); 166 //bw.write("hijk "); 167 bw.close(); 168 fw.close(); 169 } catch (Exception e) { 170 // TODO Auto-generated catch block 171 e.printStackTrace(); 172 } 173 //} 174 } 175 }
