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Java 6 Platform Revealed phần 4

Tham khảo tài liệu 'java 6 platform revealed phần 4', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 48 CHAPTER 3 I O NETWORKING AND SECURITY UPDATES cookies.append cookie.toString Map to return Map String List String cookieMap new HashMap String List String requestHeaders Convert StringBuilder to List store in map if cookies.length 0 List String list Collections.singletonList cookies.toString cookieMap.put Cookie list System.out.println CookieMap cookieMap Make read-only return Collections.unmodifiableMap cookieMap In Java 6 the ListCookieHandler turns into the CookieManager class. The cookieJar that is used as the cache becomes the CookieStore. One thing not in this implementation of CookieHandler is a policy for storing cookies. Do you want to accept no cookies all cookies or only cookies from the original server That s where the CookiePolicy class comes into play. You will explore CookiePolicy more later. The last part of the Java 5 situation is the Cookie class itself. The constructor parses out the fields from the header line. Listing 3-5 shows an implementation that will be replaced in Java 6 by HttpCookie. The Java 6 version will also be more complete. Listing 3-5. Implementing a Cookie Class to Save for Java 5 import java.net. import java.text. import java.util. public class Cookie String name String value URI uri CHAPTER 3 I O NETWORKING AND SECURITY UPDATES 49 String domain Date expires String path private static DateFormat expiresFormatl new SimpleDateFormat E dd MMM yyyy k m s GMT Locale.US private static DateFormat expiresFormat2 new SimpleDateFormat E dd-MMM-yyyy k m s GMT Locale.US public Cookie URI uri String header String attributes header.split String nameValue attributes 0 .trim this.uri uri this.name nameValue.substring 0 nameValue.indexOf this.value nameValue.substring nameValue.indexOf 1 this.path this.domain uri.getHost for int i 1 i attributes.length i nameValue attributes i .trim int equals nameValue.indexOf if equals -1 continue String name nameValue.substring 0 equals String value nameValue.substring equals 1 if name.equalsIgnoreCase .