一,简单rpc 是基于Java socket 编程
ServerSocket serverSocket = new ServerSocket(9999);
System.out.println("服务开启");
while(true) {
//开启一个服务监听
Socket socket = serverSocket.accept();
System.out.println(socket.getInetAddress()+"-connected");
InputStream in = socket.getInputStream();
byte[] buf = new byte[1024];
in.read(buf);
//拿到序列化得数据
byte[] formatDate = formatData(buf);
OutputStream out = socket.getOutputStream();
out.write(formatDate);
socket.close();
}
通过NetModel类保证从客户端传入的参数 包括 类的名称 方法名称 参数类型 参数
package org.Simple.API;
import java.io.Serializable;
import java.util.Arrays;
public class NetModel implements Serializable{
private static final long serialVersionUID = 1L;
private String className;
private String method;
private Object[] args ;
private String[] types;
public String getClassName() {
return className;
}
public void setClassName(String className) {
this.className = className;
}
public String getMethod() {
return method;
}
public void setMethod(String method) {
this.method = method;
}
public Object[] getArgs() {
return args;
}
public void setArgs(Object[] args) {
this.args = args;
}
public String[] getTypes() {
return types;
}
public void setTypes(String[] types) {
this.types = types;
}
@Override
public String toString() {
return "NetModel [className=" + className + ", method=" + method + ", args=" + Arrays.toString(args)
+ ", types=" + Arrays.toString(types) + "]";
}
}
通过Java 反射 调用方法生成结果 在通过 serversocket 返回给客户端
try {
//将收到的byte数组反序列化为NetModel类型,然后通过反射调用HelloServiceImpl实现类的方法
NetModel netModel = (NetModel)SerializeUtils.deSerialize(bs);
//包点类名称
String className = netModel.getClassName();
//参数类型
String[] types = netModel.getTypes();
//参数
Object[] args = netModel.getArgs();
/*这里简单通过Map来做接口映射到实现类,从map中取
Map<String, String> map = new HashMap<String,String>();
map.put("org.Simple.API.HelloService", "org.Simple.S.HelloServiceImpl");
Class<?> clazz = Class.forName(map.get(className));
*/
//也可以把这个键值放到配置文件下,通过配置文件读取
Class<?> clazz = Class.forName(getPropertyValue(className));
Class<?> [] typeClazzs = null;
if(types!=null) {
typeClazzs = new Class[types.length];
for (int i = 0; i < typeClazzs.length; i++) {
typeClazzs[i] = Class.forName(types[i]);
}
}
Method method = clazz.getMethod(netModel.getMethod(),typeClazzs);
//方法调用 参数
Object object = method.invoke(clazz.newInstance(), args);
byte[] byteArray = SerializeUtils.serialize(object);
return byteArray;
} catch (Exception e) {
e.printStackTrace();
}
return null;