情景：
你在后台写sql文访问数据库时是不是要这样写
String sql="select a,"
+"b,"
+"c "
+"from table";
String sql="select a,"
+"b,"
+"c "
+"from table";
当sql语句短还好，要是长了该写多少个“+”和““”啊，于是就想写一个工具类处理长字符串拼接的问题
代码：
import java.util.ArrayList;
import java.util.Scanner;
public class GenSqlString {
/**
* 处理长字符串拼接
* @param args
*/
public static void main(String[] args) {
ArrayList<String> array = new ArrayList<String>();
Scanner scn = new Scanner(System.in);
String line;
String reString;
System.out.println("请输入您的长字符串");
//BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
//String reString="+\""+br.readLine()+" \"";
/** 当输入end时回车结束*/
while (!"end".equals(line = scn.nextLine())) {
array.add(line);
}
System.out.println("The result is: \r\n");
int i=1;
for(String str : array){
if(i==1){
reString="\""+str+" \"";
}else if(i==array.size()){
reString="+\""+str+" \";";
}else{
reString="+\""+str+" \"";
}
System.out.println(reString);
i++;
}
}
}
import java.util.ArrayList;
import java.util.Scanner;
public class GenSqlString {
/**
* 处理长字符串拼接
* @param args
*/
public static void main(String[] args) {
ArrayList<String> array = new ArrayList<String>();
Scanner scn = new Scanner(System.in);
String line;
String reString;
System.out.println("请输入您的长字符串");
//BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
//String reString="+\""+br.readLine()+" \"";
/** 当输入end时回车结束*/
while (!"end".equals(line = scn.nextLine())) {
array.add(line);
}
System.out.println("The result is: \r\n");
int i=1;
for(String str : array){
if(i==1){
reString="\""+str+" \"";
}else if(i==array.size()){
reString="+\""+str+" \";";
}else{
reString="+\""+str+" \"";
}
System.out.println(reString);
i++;
}
}
}
虽然简单点，但是能用就行，提高开发效率嘛
