com.github.lfopenjavaswagger2word.util.TextUtil Maven / Gradle / Ivy
package com.github.lfopenjavaswagger2word.util;
import java.io.*;
import java.util.Iterator;
import java.util.Objects;
public class TextUtil {
public static final String EMPTY = "";
public static void write(String file, String content) {
File wFile = new File(file);
try (
//打开文件
//创建FileWriter
FileWriter writer = new FileWriter(wFile);
//使用BufferedWriter加速
BufferedWriter bufferedWriter = new BufferedWriter(writer);
) {
//写入
bufferedWriter.write(content);
//刷新缓冲区
bufferedWriter.flush();
} catch (Exception e) {
e.printStackTrace();// TODO: handle exception
}
}
public static String reader(String file) {
File myFile = new File(file);
try (
//创建FileReader
FileReader fileReader = new FileReader(myFile);
//使用BufferedReader加速
BufferedReader bufferedReader = new BufferedReader(fileReader);
) {
//打开文件
//逐行读取文本
String lineString = null;
StringBuilder stringBuilder = new StringBuilder();
while ((lineString = bufferedReader.readLine()) != null) {
// System.out.println(lineString);
stringBuilder.append(lineString);
}
// System.err.println(stringBuilder.toString());
return stringBuilder.toString();
} catch (Exception e) {
e.printStackTrace();// TODO: handle exception
}
return null;
}
/**
* 在指定字符串前面添加指定个数的空格
*
* @param str
* @param x
* @return
*/
public static String addBlank(String str, int x) {
StringBuilder stringBuilder = new StringBuilder("");
for (int i = 0; i < x; i++) {
stringBuilder.append(" ");
}
stringBuilder.append(str);
return stringBuilder.toString();
}
/**
* 连接字符串
* @param params
* @return
*/
public static String concat(String... params) {
StringBuilder stringBuilder= new StringBuilder();
for (int i = 0; i < params.length; i++) {
stringBuilder.append(params[i]);
}
return stringBuilder.toString();
}
public static String defaultIfBlank(String type,String defaultVal){
if(type == null || type.equals("")){
return defaultVal;
}else{
return type;
}
}
public static boolean isBlank(String ref){
return ref == null || ref.trim().equals("");
}
public static String substringBeforeLast(String str, String separator) {
if (!isEmpty(str) && !isEmpty(separator)) {
int pos = str.lastIndexOf(separator);
return pos == -1 ? str : str.substring(0, pos);
} else {
return str;
}
}
public static boolean isEmpty(CharSequence cs) {
return cs == null || cs.length() == 0;
}
public static boolean isNotEmpty(CharSequence cs) {
return !isEmpty(cs);
}
public static String join(Iterable iterable, String separator) {
return iterable == null ? null : join(iterable.iterator(), separator);
}
public static String join(Iterator iterator, String separator) {
if (iterator == null) {
return null;
} else if (!iterator.hasNext()) {
return "";
} else {
Object first = iterator.next();
if (!iterator.hasNext()) {
return Objects.toString(first, "");
} else {
StringBuilder buf = new StringBuilder(256);
if (first != null) {
buf.append(first);
}
while(iterator.hasNext()) {
if (separator != null) {
buf.append(separator);
}
Object obj = iterator.next();
if (obj != null) {
buf.append(obj);
}
}
return buf.toString();
}
}
}
}