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BusinessService.java
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142 lines (115 loc) · 3.93 KB
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package cn.aofeng.demo.aspectj;
/**
* 模拟业务方法，将被Aspectj织入代码，增加功能。
*
* @author <a href="mailto:aofengblog@163.com">聂勇</a>
*/
public class BusinessService {
public long add(int a, int b) {
return a+b;
}
public long add(int a, int b, int... other) {
long result = a + b;
for (int i : other) {
result += i;
}
return result;
}
public String join(String first, String... appends) {
if (null == first) {
throw new IllegalArgumentException("first is null");
}
StringBuilder buffer = new StringBuilder();
buffer.append(first);
for (String str : appends) {
buffer.append(str);
}
return buffer.toString();
}
public String addPrefix(String src) {
if (null == src) {
throw new IllegalArgumentException("src is null");
}
return "-->"+src;
}
public static void printLine(char style) {
if ('=' == style) {
System.out.println("========================================================================================");
} else if ('-' == style) {
System.out.println("----------------------------------------------------------------------------------------");
} else {
System.out.println(" ");
}
}
public static void main(String[] args) {
final BusinessService bs = new BusinessService();
System.out.println("1、执行方法add(int, int)");
RunMethod rm = new RunMethod() {
@Override
public void run() {
long result = bs.add(1, 2);
System.out.println(">>> 结果：" + result);
}
};
rm.execute();
System.out.println("2、执行方法add(int, int, int...)");
rm = new RunMethod() {
@Override
public void run() {
long result = bs.add(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
System.out.println(">>> 结果：" + result);
}
};
rm.execute();
System.out.println("3、执行方法join(String, String...)");
rm = new RunMethod() {
@Override
public void run() {
String str = bs.join("first", "-second", "-third");
System.out.println(">>> 结果：" + str);
}
};
rm.execute();
System.out.println("4、执行方法join(String, String...)");
rm = new RunMethod() {
@Override
public void run() {
String str = bs.join(null, "-second", "-third");
System.out.println(">>> 结果：" + str);
}
};
rm.execute();
System.out.println("5、执行方法addPrefix(String)");
rm = new RunMethod() {
@Override
public void run() {
String str = bs.addPrefix("原字符串");
System.out.println(">>> 结果：" + str);
}
};
rm.execute();
System.out.println("6、执行方法addPrefix(String)");
rm = new RunMethod() {
@Override
public void run() {
String str = bs.addPrefix(null);
System.out.println(">>> 结果：" + str);
}
};
rm.execute();
}
public static abstract class RunMethod {
private char _style = '=';
public void execute() {
printLine(_style);
try {
run();
} catch (Exception e) {
e.printStackTrace(System.err);
}
printLine(_style);
printLine(' ');
}
public abstract void run();
}
}