Thiết kế các công tác bình yêu cầu cho một nhiệm vụ tạo ra lọ là gì? Một nơi tốt để bắt đầu là cái bình dòng lệnh, công cụ. Ở mức tối thiểu, nhiệm vụ của chúng tôi sẽ nhân rộng các JAR-tạo ra các tính năng của công cụ (như trái ngược với tất cả các tính năng của công cụ). Sự khác biệt này là quan trọng. | Ant The Definitive Guide int long etc. N A The standard Java type wrapper classes like handle conversion from text in the buildfile to primitive types. Path Most commonly used by classpath and sourcepath attributes representing a list of paths separated by or . This is described in detail under Path DataType. Reference Commonly used in refid attributes and contains a reference to a type defined elsewhere. See the example for the java task in Chapter 7 which shows how to reference a classpath defined elsewhere in the buildfile. String j The most commonly used type in Ant. Strings along with other attributes are subject to XML attribute limitations. For instance the character must be written as lt . Argument DataType The apply exec and java tasks accept nested arg elements specifying command-line arguments for their respective process calls. The class implements this If several arg elements are specified each is treated as a separate argument to the process call. Following is a list of all arg attributes file all File A filename as a single argument. In the buildfile this filename is relative to the current working directory. The current working directory varies depending on the context this type is used in. The name is converted to an absolute path when passed as an argument. line all String A space-delimited list of multiple arguments. path all Path A path as explained later in the section Path DataType. Argument is treated as a DataType although it does not extend from the DataType base class. 61 Ant The Definitive Guide value all String A single command-line argument. Use this if your argument has spaces but you still want to treat it as a single value. Exactly one of these attributes is required. Example Let s look at a complete buildfile to put things into perspective. In Example 4-1 we use .
