1、数组对象转换成字符串，拼接成符合sql语句的语法
2、代码如下例子
public static void testString(){
String[] str=new String[]{"a","b","c","d","e"};
String acc = null;
for (int i = 0; i < str.length; i++) {
acc=acc+"'"+str[i]+"'"+",";
}
acc=acc.substring(4, 23);
System.out.println("拼接的字符串为："+acc);
}
3、结果为：
拼接的字符串为：'a','b','c','d','e'
