把字符串或者字符串list写入一个特定的文件-蒲公英云

把字符串或者字符串list写入一个特定的文件

红太狼 2023-01-03 04:11 238阅读 0赞

package com.centrin.process.utils;
import java.io.*;
import java.util.List;
public class ExportFileUtils { 
    public static void writeFile(String tmp, String filePath) throws IOException { 
        BufferedWriter out = null;
        try { 
            out = new BufferedWriter(new OutputStreamWriter(
                    new FileOutputStream(new File(filePath), true)));
            out.write(tmp+"\r\n");
        } catch (Exception e) { 
            e.printStackTrace();
        } finally { 
            try { 
                out.close();
            } catch (IOException e) { 
                e.printStackTrace();
            }
        }
    }
    public static void writeFile(List<String> dataList, String filePath) throws IOException { 
        //String filePath = "D:/opt/mapping/out/mytest04.csv";//设置文件的路径
        File sqlFile = new File(filePath);    //创建备份文件对象
        FileOutputStream fos = null;//文件字节输出流
        OutputStreamWriter osw = null;//字节流转字符流
        BufferedWriter rw = null;//缓冲字符流
        try { 
            fos = new FileOutputStream(sqlFile);
            osw = new OutputStreamWriter(fos);
            rw = new BufferedWriter(osw);
            for (String tmp : dataList) { //遍历所有备份sql
                rw.write(tmp);//向文件中写入sql
                rw.newLine();//文件换行
                rw.flush();//字符流刷新
            }
        } catch (FileNotFoundException e) { 
            e.printStackTrace();
        } catch (IOException e) { 
            e.printStackTrace();
        } finally { 
            //倒序依次关闭所有IO流
            if (rw != null) { 
                try { 
                    rw.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            if (osw != null) { 
                try { 
                    osw.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            if (fos != null) { 
                try { 
                    fos.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
        }
    }
}