StringBuilder requestUrl = new StringBuilder(scheme);//4 requestUrl.append("://"); requestUrl.append(domain);//5 跟我学 Shiro——http://jinnianshilongnian.iteye.com/ 196 requestUrl.append(":").append(String.valueOf(port)); } else if("https".equalsIgnoreCase(scheme) && port != 443) { requestUrl.append(":").append(String.valueOf(port)); //7 requestUrl.append(requestURI); //8 if (backUrl == null && getQueryString() != null) { requestUrl.append("?").append(getQueryString()); }

String ss = "Hello" + s + ". I love you."; 3 System.out.println(ss); 这段代码可能是怎么工作的？ String 可能有一个 append() 方法，它会生成一个新的 String 对 象，该新对象包含了“Hello”与 s 连接后的字符串；然后再与 “I love you”连接，再次生成新的 String 对象。 这种工作方式会产生一大堆需要垃圾回收的中间对象！ String ss = "Hello" + s + ". I love you."; 3 System.out.println(ss); 这段代码可能是怎么工作的？ String 可能有一个 append() 方法，它会生成一个新的 String 对 象，该新对象包含了“Hello”与 s 连接后的字符串；然后再与 “I love you”连接，再次生成新的 String 对象。 这种工作方式会产生一大堆需要垃圾回收的中间对象！ String ss = "Hello" + s + ". I love you."; 3 System.out.println(ss); 这段代码可能是怎么工作的？ String 可能有一个 append() 方法，它会生成一个新的 String 对 象，该新对象包含了“Hello”与 s 连接后的字符串；然后再与 “I love you”连接，再次生成新的 String 对象。 这种工作方式会产生一大堆需要垃圾回收的中间对象！

e:now:yyyyMMddHHmm}.csv&fileExist=Append) sftp://USER@HOST/PATH?password=PASSWORD&binary=true&fileName=profiles-export- ${date:now:yyyyMMddHHmm}.csv&fileExist=Append ftps://USER@HOST?password=PASSWOR password=PASSWORD&binary=true&fileName=profiles-export- ${date:now:yyyyMMddHHmm}.csv&fileExist=Append&passiveMode=true As you can see in the examples above, you can inject variables in the produced file name ${date:now:yyyyMMddHHmm} current date formatted with the pattern yyyyMMddHHmm. fileExist option put as Append will tell the file writer to append to the same file for each execution of the export configuration. You cam omit

e:now:yyyyMMddHHmm}.csv&fileExist=Append) sftp://USER@HOST/PATH?password=PASSWORD&binary=true&fileName=profiles- export-${date:now:yyyyMMddHHmm}.csv&fileExist=Append ftps://USER@HOST?password=PASSWOR password=PASSWORD&binary=true&fileName=profiles- export-${date:now:yyyyMMddHHmm}.csv&fileExist=Append&passiveMode=true As you can see in the examples above, you can inject variables in the produced file name ${date:now:yyyyMMddHHmm} current date formatted with the pattern yyyyMMddHHmm . fileExist option put as Append will tell the file writer to append to the same file for each execution of the export configuration. You cam omit

to overwrite the existing value of an attribute we can use subclass AttributeAppender which will append its value to the existing one: label.add(new AttributeAppender("style", "color:red;font-weight:bold")); "color:red;font-weight:bold")); //appends the given value to the existing one label.add(AttributeModifier.append("style", "color:red;font-weight:bold")); //prepends the given value to the existing one label.a locate a properties file having a file name equals to the current full name (Java will automatically append extension .properties to the full name). For example given the resource bundle of the previous example

to overwrite the existing value of an attribute we can use subclass AttributeAppender which will append its value to the existing one: label.add(new AttributeAppender("style", "color:red;font-weight:bold")); "color:red;font-weight:bold")); //appends the given value to the existing one label.add(AttributeModifier.append("style", "color:red;font-weight:bold")); //prepends the given value to the existing one label.a locate a properties file having a file name equals to the current full name (Java will automatically append extension .properties to the full name). For example given the resource bundle of the previous example

to overwrite the existing value of an attribute we can use subclass AttributeAppender which will append its value to the existing one: label.add(new AttributeAppender("style", "color:red;font-weight:bold")); "color:red;font-weight:bold")); //appends the given value to the existing one label.add(AttributeModifier.append("style", "color:red;font-weight:bold")); //prepends the given value to the existing one label.a locate a properties file having a file name equals to the current full name (Java will automatically append extension .properties to the full name). For example given the resource bundle of the previous example

to overwrite the existing value of an attribute we can use subclass AttributeAppender which will append its value to the existing one: label.add(new AttributeAppender("style", "color:red;font-weight:bold")); "color:red;font-weight:bold")); //appends the given value to the existing one label.add(AttributeModifier.append("style", "color:red;font-weight:bold")); //prepends the given value to the existing one label.a locate a properties file having a file name equals to the current full name (Java will automatically append extension .properties to the full name). For example given the resource bundle of the previous example

AUDIT_FILE.level=INFO handler.AUDIT_FILE.properties=suffix,append,autoFlush,fileName handler.AUDIT_FILE.suffix=.yyyy-MM-dd handler.AUDIT_FILE.append=true handler.AUDIT_FILE.autoFlush=true handler.AUDIT_FILE profile , with the option -Xbootclasspath/a . Note: the environment variable JAVA_ARGS_APPEND can be used to append or override options. Adding Runtime Dependencies Runtime dependencies like diverts, uses JDBC to connect to a database of your choice. File Journal (Default) The file journal is an append only journal. It consists of a set of files on disk. Each file is pre-created to a fixed size and

AUDIT_FILE.level=INFO handler.AUDIT_FILE.properties=suffix,append,autoFlush,fileName handler.AUDIT_FILE.suffix=.yyyy-MM-dd handler.AUDIT_FILE.append=true handler.AUDIT_FILE.autoFlush=true handler.AUDIT_FILE artemis.profile, with the option -Xbootclasspath/a.  the environment variable JAVA_ARGS_APPEND can be used to append or override options. 18.5.4. Adding Runtime Dependencies Runtime dependencies like head may be skipping all over the place between the different files. One of the advantages of an append only journal is that disk head movement is minimised - this advantage is destroyed if the disk is