properties配置文件的基本操作

Posted 2020-10-07 学海无涯

对properties的基本操作

public class PropertiesUtil {
// 是否是文件
public static boolean isFile = false;
// 路径
public static String path;
// 单列properties
private static Properties properties = null;
// 构造方法初始化文件
public PropertiesUtil(String path) {
this.path = path;
File file = new File(path);
isFile = file.isFile();
// TODO Auto-generated constructor stub
}
public boolean isFile(String path){
return isFile;
};
// 把配置文件转化为对象
public Object propertiesToObject(Object object,String path) throws Exception, NoSuchMethodException{
if(!isFile(path)){
return null;
}
Field[] files = object.getClass().getDeclaredFields();
Properties properties = load(path);
for(Field field:files){
String fieldName = field.getName();
Class type = field.getType();
String methodFieldName = "set"+fieldName.substring(0, 1).toUpperCase()+fieldName.substring(1);
Method method = object.getClass().getMethod(methodFieldName, type);
method.invoke(object, properties.get(fieldName));
}
return object;
}
// 获取配置文件中所有的键值
public List<Object> getListKey(String path) throws IOException{
if(!isFile(path)){
return null;
}
Properties properties = load(path);
Set<Object> set = properties.keySet();
List<Object>list = new ArrayList<Object>(set);
return list;
}
// 获取配置文件中所有的值
public List<Object> getListValue(String path) throws IOException{
if(!isFile(path)){
return null;
}
Properties properties = load(path);
List<Object> list = new ArrayList<Object>();
for(Object key:properties.keySet()){
list.add(properties.get(key));
}
return list;
}
// 配置文件转成map集合
public Map<String,Object> getMapKeyValue(String path) throws IOException{
if(!isFile(path)){
return null;
}
Map<String,Object> resultMap = new HashMap<String,Object>();
Properties properties = load(path);
for(Object key : getListKey(path)){
resultMap.put((String)key, properties.get(key));
}
return resultMap;
}
public Properties load(String path) throws IOException{
if(properties == null){
InputStream stream = new FileInputStream(path);
properties = new Properties();
properties.load(stream);
}
return properties;
}
public static void main(String[]args) throws NoSuchMethodException, Exception{
String path = "D:/ceshiproperties/admessage.properties";
PropertiesUtil util = new PropertiesUtil(path);
System.out.println("此文件是否是一个文件"+util.isFile(path));
List<Object> listKey = util.getListKey(path);
for(Object object:listKey){
System.out.println("配置文件中所有的key值"+object.toString());
}
List<Object> listValue=util.getListValue(path);
for(Object object:listValue){
System.out.println("配置文件中所有的value"+object.toString());
}
AdMessage adMessage = new AdMessage();
util.propertiesToObject(adMessage, path);
System.out.println("值1"+adMessage.getMessage_content_changestatus_());
System.out.println("值2"+adMessage.getMessage_content_delete_());
System.out.println(util.getMapKeyValue(path));
System.exit(0);
}
}

对象bean的构造

public class AdMessage {
private String message_subject_of_delete_;
private String message_subject_changestatus_;
private String message_content_delete_;
private String message_content_changestatus_;
public String getMessage_subject_of_delete_() {
return message_subject_of_delete_;
}
public void setMessage_subject_of_delete_(String message_subject_of_delete_) {
this.message_subject_of_delete_ = message_subject_of_delete_;
}
public String getMessage_subject_changestatus_() {
return message_subject_changestatus_;
}
public void setMessage_subject_changestatus_(
String message_subject_changestatus_) {
this.message_subject_changestatus_ = message_subject_changestatus_;
}
public String getMessage_content_delete_() {
return message_content_delete_;
}
public void setMessage_content_delete_(String message_content_delete_) {
this.message_content_delete_ = message_content_delete_;
}
public String getMessage_content_changestatus_() {
return message_content_changestatus_;
}
public void setMessage_content_changestatus_(
String message_content_changestatus_) {
this.message_content_changestatus_ = message_content_changestatus_;
}

}

配置文件properties

路径：D:/ceshiproperties/admessage.properties

message_subject_of_delete_=liubing
message_subject_changestatus_=\u60A8\u6709\u4E00\u6761{0}\u6570\u636E\u88AB\u6FC0\u6D3B
message_content_delete_=15
message_content_changestatus_={0}\u6FC0\u6D3B\u4E86\u4E00\u6761{1}\u6570\u636E