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java 拼接字元和解析字元串
import java.util.ArrayList;
import java.util.List;
/**
* Created by Administrator on 2015/6/14.
*/
public class Test {
private static ListString infor;
static {
infor = new ArrayListString();
infor.add(“流水號1”);
infor.add(“收款方帳號1”);
infor.add(“真實姓名”);
infor.add(“付款金額1”);
infor.add(“備註說明1”);
infor.add(“流水號2”);
infor.add(“收款方帳號2”);
infor.add(“真實姓名”);
infor.add(“付款金額2”);
infor.add(“備註說明2”);
}
public static void main(String args[]) {
/**
* 開始拼接字元串
*/
String inforString = infor.get(0);
for (int i = 1, k = infor.size(); i k; i++) {
if (i % 5 == 0) {
inforString += “|”;
} else {
inforString += “^”;
}
inforString += infor.get(i);
}
System.out.println(“拼接後的字元串是:” + inforString);
/**
* 開始解釋字元串
*/
String[] usersInfor = inforString.split(“\\|”);
System.out.println(usersInfor.length);
User user;
String[] userString;
for (int i = 0, k = usersInfor.length; i k; i++) {
userString = usersInfor[i].split(“\\^”);
user = new User();
user.setId(userString[0]);
user.setGathering(userString[1]);
user.setName(userString[2]);
user.setPayment(userString[3]);
user.setRemark(userString[4]);
System.out.println(“User” + i + “=” + user);
}
}
static class User {
private String id;
private String gathering;
private String name;
private String payment;
private String remark;
public User() {
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getGathering() {
return gathering;
}
public void setGathering(String gathering) {
this.gathering = gathering;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPayment() {
return payment;
}
public void setPayment(String payment) {
this.payment = payment;
}
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
@Override
public String toString() {
return “[id:” + id + “,gathering:” + gathering + “,name:” + name + “,payment:” + payment + “,remark:” + remark + “]”;
}
}
}
java解析字元串 算術表達式求值
Java 有一個jar包 叫 groovy
groovy可以實現動態執行 String格式的算數表達式
public static void main(String[] args) throws Exception{
String str1 = “1 + 2 * 3”; //表達式1 固定表達式
GroovyShell groovyShell = new GroovyShell();
Object value = groovyShell.evaluate(str1);
System.out.println(value);
String str2 = “A + B * C”; //表達式2 動態表達式
Binding binding = new Binding();
binding.setVariable(“A”,1); //表達式中 所有的A替換為1
binding.setVariable(“B”,2);//表達式中 所有的B替換為2
binding.setVariable(“C”,3);//表達式中 所有的C替換為3
GroovyShell groovyShell2 = new GroovyShell(binding);
Object value2 = groovyShell2.evaluate(str2); //str2 實際表達式為 1 + 2 * 3
System.out.println(value2);
}
java解析字元串
package com;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
public class Yuma
{
private ListMap analysisConfig(String config)
{
String[] arr = config.split(“;”);
String reg = “([^\\(]+)(\\([^\\)]*\\))”;
ListMap list = new LinkedListMap();
for(int i = 0; i arr.length; i++)
{
String tmp = arr[i];
MapString, String map = new HashMapString, String();
map.put(tmp.replaceAll(reg, “$1”), tmp.replaceAll(reg, “$2”));
list.add(map);
}
return list;
}
public static void main(String[] args)
{
String ruleConfig = “債券(0000,1200,1100);非標資產(0100);質押式回購(0123@質押式正回購,0123@質押式逆回購)”;
Yuma yuma = new Yuma();
ListMap list = yuma.analysisConfig(ruleConfig);
System.out.println(list);
}
}
java 解析json字元串
你好：
後台拆分json
private String interactPrizeAll; //json 使用字元串來接收
方法中的代碼：
Gson gson = new Gson();
InteractPrize interactPrize =new InteractPrize();
//gson用泛型 轉List數組 多個對象
ListInteractPrize interactPrizeList = gson.fromJson(interactPrizeAll, new TypeTokenListInteractPrize(){}.getType()); //TypeToken，它是gson提供的數據類型轉換器，可以支持各種數據集合類型轉換
for(int i = 0; i interactPrizeList.size(); i++)
{
interactPrize = interactPrizeList.get(i);//獲取每一個對象
}
這一種方法是轉單個對象時使用的
//gson 轉對象 單個對象
//interactPrize = gson.fromJso(interactPrizeAll,InteractPrize.class);
這個方法是我後台拼的json往前台傳的方法
jsonStrAll.append(“{“+ “\””+”catid”+”\””+”:”+”\””+c.getCatid()+”\””+”,”+”\””+”catname”+”\””+”:”+”\””+c.getCatname()+”\””+”,”+ “\””+”catdesc”+”\””+”:”+”\””+c.getCatdesc()+”\””+”,”+”\””+”showinnav”+”\””+”:”+”\””+c.getShowinnav()+”\””+”,”+”\””+”sortorder”+”\””+”:”+”\””+c.getSortorder()+”\””+”,”+”level:”+”\””+”0″+”\””+”,parent:”+”\””+”0″+”\””+”,isLeaf:true,expanded:false,”+”loaded:true},”);
你自己挑著用吧！
原創文章，作者：HMFV，如若轉載，請註明出處：https://www.506064.com/zh-tw/n/134349.html
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