[code]
package com.lxitedu.homework;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.lang.reflect.Constructor;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import com.lxitedu.service.LxitClassService;
import lombok.SneakyThrows;
public class Container {
@SneakyThrows
public static Object instance(String param) {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
URL url = classLoader.getResource("beanConfig");
File file = new File(url.getFile());
BufferedReader bufferedReader = new BufferedReader(new FileReader(file));
String value = bufferedReader.readLine();
String type = null;
String[] array = null;
String nestedClass = null;
Class<?> classes = null;
while (value != null) {
array = value.split("=");
for (int i = 0; i < array.length; i++) {
if (array[i].equals(param)) {
if (array[i + 1].contains("(")) {
nestedClass = array[i + 1].split("\\(")[i + 1].substring(0, array[i + 1].split("\\(")[i + 1].length() - 1);
classes = Class.forName(getBeanPath(nestedClass));
System.out.println("class " + getBeanPath(nestedClass));
int size = array[i + 1].length() - nestedClass.length()-2;
type = array[i + 1].substring(0, size);
} else {
type = array[i + 1];
}
}
}
value = bufferedReader.readLine();
}
Constructor<?> constructor = getConstructor(classes, type, array);
return getConstructorInstance(type, constructor);
}
@SneakyThrows
public static String getBeanPath(String param) {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
URL url = classLoader.getResource("beanConfig");
File file = new File(url.getFile());
BufferedReader bufferedReader = new BufferedReader(new FileReader(file));
String value = bufferedReader.readLine();
String type = null;
String[] array = null;
while (value != null) {
array = value.split("=");
for (int i = 0; i < array.length; i++) {
if (array[i].trim().equals(param)) {
type = array[i + 1];
}
}
value = bufferedReader.readLine();
}
if (type == null) {
return null;
} else {
return type;
}
}
@SneakyThrows
private static Constructor<?> getConstructor(Class<?> nestedClass, String type, String[] array) {
Class<?> classes = null;
Constructor<?> constructor = null;
Map<Integer, Class<?>> map = new HashMap<Integer, Class<?>>();
for (int j = 0; j < array.length; j++) {
if (map.get(j) == null) {
classes = Class.forName(type);
if (nestedClass != null) {
constructor = classes.getConstructor(nestedClass);
} else {
constructor = classes.getConstructor();
}
map.put(j, classes);
} else {
classes = map.get(j);
}
}
return constructor;
}
@SneakyThrows
private static Object getConstructorInstance(String type, Constructor<?> constructor) {
if (type == null) {
return null;
} else {
return constructor.newInstance();
}
}
public static void main(String[] args) {
LxitClassService test = (LxitClassService) instance("lxitClassService");
System.out.println(test.getList());
}
}
[/code]
