String newPurchaseOrder = dateStr + "#" + customerID + "#" + productCode + "#" + qty;
try {
String filename = "PurchaseOrderDataFile.txt";
FileWriter fw = new FileWriter(filename, true); //the true will append the new data
BufferedWriter bw = new BufferedWriter(fw);
FileReader fr = new FileReader("PurchaseOrderDataFile.txt");
bw.write("\n" + newPurchaseOrder);
bw.close();
} catch (IOException ioe) {
System.err.println("IOException: " + ioe.getMessage());
}
尝试阻止其在输入.txt文件时跳行
08/12/13#PMI-1256#DT/9489#8
16/12/13#ENE-5789#PV/5732#25
27/12/13#PEA-4567#PV/5732#3@
09/01/14#PEA-4567#DT/9489#1
16/01/14#EMI-6329#PV/5732#8
16/07/13#ESE-5577#ZR/7413#6
输入会跳过如上所述的行
最佳答案
您所说的“跳行”是什么意思? bw.write("\n"+ newPurchaseOrder);
如果您的意思是这样的话,将首先放置一个空行,只需将 "\n"
转移到末尾即可。以下代码工作正常:
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.FileReader;
import java.io.FileWriter;
class myWrite {
public static void main(String[] args) {
String dateStr = "test";
String customerID = "1";
String productCode = "100";
String qty = "1000";
String newPurchaseOrder = dateStr + "#" + customerID + "#" + productCode + "#" + qty;
String newPurchaseOrder2 = dateStr + "#" + customerID + "#" + productCode + "#" + qty;
try {
String filename = "PurchaseOrderDataFile.txt";
FileWriter fw = new FileWriter(filename, true); //the true will append the new data
BufferedWriter bw = new BufferedWriter(fw);
FileReader fr = new FileReader("PurchaseOrderDataFile.txt");
bw.write(newPurchaseOrder + "\n");
bw.write(newPurchaseOrder2 + "\n");
bw.close();
} catch (IOException ioe) {
System.err.println("IOException: " + ioe.getMessage());
}
}
}
写道:
test#1#100#1000
test#1#100#1000
编辑:使用你告诉我的输出,
08/12/13#PMI-1256#DT/9489#8
16/12/13#ENE-5789#PV/5732#25
27/12/13#PEA-4567#PV/5732#3@
09/01/14#PEA-4567#DT/9489#1
16/01/14#EMI-6329#PV/5732#8
然后我添加了你告诉我的行:
16/07/13#ESE-5577#ZR/7413#6
产生:
08/12/13#PMI-1256#DT/9489#8
16/12/13#ENE-5789#PV/5732#25
27/12/13#PEA-4567#PV/5732#3@
09/01/14#PEA-4567#DT/9489#1
16/01/14#EMI-6329#PV/5732#8
16/07/13#ESE-5577#ZR/7413#6
使用我的代码,它工作正常并且可以满足您的要求..
关于java - 写入.txt跳过行并留下空格java,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29086146/