文本文件(前三行易于阅读,后三行以p开头)
ThreadSize:2
ExistingRange:1-1000
NewRange:5000-10000
p:55 - AutoRefreshStoreCategories Data:Previous UserLogged:true Attribute:1 Attribute:16 Attribute:2060
p:25 - CrossPromoEditItemRule Data:New UserLogged:false Attribute:1 Attribute:10107 Attribute:10108
p:20 - CrossPromoManageRules Data:Previous UserLogged:true Attribute:1 Attribute:10107 Attribute:10108
下面是我编写的用于解析上述文件的代码,在解析之后,我使用其Setter设置相应的值。我只是想知道我是否可以通过使用RegEx之类的其他方式在解析和其他方面更多地改进这些代码?我的主要目标是解析它并设置相应的值。任何反馈或建议都将受到高度赞赏。
private List<Command> commands;
private static int noOfThreads = 3;
private static int startRange = 1;
private static int endRange = 1000;
private static int newStartRange = 5000;
private static int newEndRange = 10000;
private BufferedReader br = null;
private String sCurrentLine = null;
private int distributeRange = 100;
private List<String> values = new ArrayList<String>();
private String commandName;
private static String data;
private static boolean userLogged;
private static List<Integer> attributeID = new ArrayList<Integer>();
try {
// Initialize the system
commands = new LinkedList<Command>();
br = new BufferedReader(new FileReader("S:\\Testing\\Test1.txt"));
while ((sCurrentLine = br.readLine()) != null) {
if(sCurrentLine.contains("ThreadSize")) {
noOfThreads = Integer.parseInt(sCurrentLine.split(":")[1]);
} else if(sCurrentLine.contains("ExistingRange")) {
startRange = Integer.parseInt(sCurrentLine.split(":")[1].split("-")[0]);
endRange = Integer.parseInt(sCurrentLine.split(":")[1].split("-")[1]);
} else if(sCurrentLine.contains("NewRange")) {
newStartRange = Integer.parseInt(sCurrentLine.split(":")[1].split("-")[0]);
newEndRange = Integer.parseInt(sCurrentLine.split(":")[1].split("-")[1]);
} else {
allLines.add(Arrays.asList(sCurrentLine.split("\\s+")));
String key = sCurrentLine.split("-")[0].split(":")[1].trim();
String value = sCurrentLine.split("-")[1].trim();
values = Arrays.asList(sCurrentLine.split("-")[1].trim().split("\\s+"));
for(String s : values) {
if(s.contains("Data:")) {
data = s.split(":")[1];
} else if(s.contains("UserLogged:")) {
userLogged = Boolean.parseBoolean(s.split(":")[1]);
} else if(s.contains("Attribute:")) {
attributeID.add(Integer.parseInt(s.split(":")[1]));
} else {
commandName = s;
}
}
Command command = new Command();
command.setName(commandName);
command.setExecutionPercentage(Double.parseDouble(key));
command.setAttributeID(attributeID);
command.setDataCriteria(data);
command.setUserLogging(userLogged);
commands.add(command);
}
}
} catch(Exception e) {
System.out.println(e);
}
答案 0 :(得分:1)
我认为你应该知道在使用RegEx时你究竟期待什么。 http://java.sun.com/developer/technicalArticles/releases/1.4regex/应该会有帮助。
答案 1 :(得分:0)
您可以使用Scanner课程。它有一些帮助方法来读取文本文件
答案 2 :(得分:0)
回答评论:
p:55 - AutoRefreshStoreCategories Data:Previous UserLogged:true Attribute:1 Attribute:16 Attribute:2060
用正则表达式解析上面(和Attribute:
3次):
String parseLine = "p:55 - AutoRefreshStoreCategories Data:Previous UserLogged:true Attribute:1 Attribute:16 Attribute:2060";
Matcher m = Pattern
.compile(
"p:(\\d+)\\s-\\s(.*?)\\s+Data:(.*?)\\s+UserLogged:(.*?)\\s+Attribute:(\\d+)\\s+Attribute:(\\d+)\\s+Attribute:(\\d+)")
.matcher(parseLine);
if(m.find()) {
int p = Integer.parseInt(m.group(1));
String method = m.group(2);
String data = m.group(3);
boolean userLogged = Boolean.valueOf(m.group(4));
int at1 = Integer.parseInt(m.group(5));
int at2 = Integer.parseInt(m.group(6));
int at3 = Integer.parseInt(m.group(7));
System.out.println(p + " " + method + " " + data + " " + userLogged + " " + at1 + " " + at2 + " "
+ at3);
}
编辑查看您的评论,您仍然可以使用正则表达式:
String parseLine = "p:55 - AutoRefreshStoreCategories Data:Previous UserLogged:true "
+ "Attribute:1 Attribute:16 Attribute:2060";
Matcher m = Pattern.compile("p:(\\d+)\\s-\\s(.*?)\\s+Data:(.*?)\\s+UserLogged:(.*?)").matcher(
parseLine);
if(m.find()) {
for(int i = 0; i < m.groupCount(); ++i) {
System.out.println(m.group(i + 1));
}
}
Matcher m2 = Pattern.compile("Attribute:(\\d+)").matcher(parseLine);
while(m2.find()) {
System.out.println("Attribute matched: " + m2.group(1));
}
但这取决于在“真实”属性之前是否为Attribute:
名称(例如作为方法名称 - 在p
之后)
答案 3 :(得分:0)
我会把它翻出来。现在你是:
对每一行进行几次完整扫描。除非文件有数十亿行,否则这本身并不是一个问题,但它表明你已经将处理工作重新开始。