import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NameClassPair;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
public class ShowBindings {
public static void main(String[] args) throws NamingException {
Context namingContext = new InitialContext();
NamingEnumeration<NameClassPair> e = namingContext.list("rmi:");
while (e.hasMore()) {
System.out.println(e.next().getName());
}
}
}
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RMIClient目錄的文件：Product.java, ProductClient.java, client.policy, download/Product.class
// Product.java與服務(wù)器端的Product.java一樣。
// ProductClient.java
import java.rmi.RMISecurityManager;
import javax.naming.Context;
import javax.naming.InitialContext;
public class ProductClient {
public static void main(String[] args) {
System.setProperty("java.security.policy", "client.policy");
System.setSecurityManager(new RMISecurityManager());
try {
String url = "rmi://localhost/";
Context namingContext = new InitialContext();
Product p1 = (Product) namingContext.lookup(url + "toaster");
Product p2 = (Product) namingContext.lookup(url + "microwave");
System.out.println(p1.getDescription());
System.out.println(p2.getDescription());
} catch (Exception e) {
e.printStackTrace();
}
}
}
// client.policy
grant {
permission java.net.SocketPermission
"*:1024-65535", "connect";
};
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運(yùn)行步驟：
1. 啟動RMI注冊表
進(jìn)入RMIServer目錄，使用命令：rmiregistry &
(退出rmiregistry命令：killall rmiregistry，重新注冊對象的時(shí)候要重啟RMI注冊表)
2.1 啟動服務(wù)器：
進(jìn)入RMIServer目錄，使用命令：java ProductServer &
(退出服務(wù)器程序，ctr + c, 但還要使用再使用一次killall java, 否則再次啟動服務(wù)器會報(bào)異常)
[2.2] 測試注冊好的對象：
進(jìn)入RMIServer目錄，使用命令：java ShowBindings
3. 啟動客戶端：
java ProductClient
觀察終端輸出的結(jié)果。