Apache Juneau基于 REST 构建的远程代理
Juneau
Apache Juneau 是Apache Software Foundation (ASF)开发的一款项目,由Apache Incubator PMC赞助。
关于
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使用通用框架将POJO编组到各种内容类型的工具包。
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REST服务器API,通过使用POJO创建基于Swagger的Self-documenting REST接口。
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通过使用POJO与REST接口进行交互的REST客户端API。
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基于REST构建的远程代理API。
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一个复杂的INI配置文件API。
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REST微服务API,结合了上述所有功能,用于创建以毫秒为单位启动的轻量级独立REST接口。
实例
核心库包括易于使用和可定制的序列化器和解析器。 Javadoc中提供了许多示例。默认序列化器通常可以用于在单行代码中的serializers POJOs :
// A simple POJO class public class Person { public String name = "John Smith"; public int age = 21; } // Serialize a bean to JSON, XML, or HTML Person p = new Person(); // Produces: // "{name:'John Smith',age:21}" String laxJson = JsonSerializer.DEFAULT_LAX.serialize(p); // Produces: // "{"name":"John Smith","age":21}" String strictJson = JsonSerializer.DEFAULT.serialize(p); // Produces: // <object> // <name>John Smith</name> // <age>21</age> // </object>< String xml = XmlSerializer.DEFAULT_SIMPLE.serialize(p); // Produces: // <table> // <tr><td>name</td><td>John Smith</td></tr> // <tr><td>age</td><td>21</td></tr> // </table> String html = HtmlSerializer.DEFAULT.serialize(p); // Produces: // name=John+Smith&age=$n(21) String urlEncoding = UrlEncodingSerializer.DEFAULT.serialize(p); // Produces: // $o(name=John Smith,age=$n(21)) String uon = UonSerializer.DEFAULT.serialize(p); // Produces: // 82 A4 name AA 4A John Smith 68 A3 age 15 byte[] messagePack = MsgPackSerializer.DEFAULT.serialize(p); // Produces: // <rdf:RDF // xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" // xmlns:jp="http://www.ibm.com/juneaubp/" // xmlns:j="http://www.ibm.com/juneau/"> // <rdf:Description> // <jp:name>John Smith</jp:name> // <jp:age>21</jp:age> // </rdf:Description> // </rdf:RDF> String rdfXml = RdfSerializer.DEFAULT_XMLABBREV.serialize(p); // Produces: // @prefix jp: <http://www.ibm.com/juneaubp/> . // @prefix j: <http://www.ibm.com/juneau/> . // [] jp:age "21" ; // jp:name "John Smith" . String rdfN3 = RdfSerializer.DEFAULT_N3.serialize(p); // Produces: // _:A3bf53c85X3aX157cf407e2dX3aXX2dX7ffd <http://www.ibm.com/juneaubp/name> "John Smith" . // _:A3bf53c85X3aX157cf407e2dX3aXX2dX7ffd <http://www.ibm.com/juneaubp/age> "21" . String rdfNTriple = RdfSerializer.DEFAULT_NTRIPLE.serialize(p);
解析POJO操作也很简单:
// Use one of the predefined parsers. ReaderParser parser = JsonParser.DEFAULT; // Parse a JSON object (creates a generic ObjectMap). String json = "{name:'John Smith',age:21}"; Map m1 = parser.parse(json, Map.class); // Parse a JSON string. json = "'foobar'"; String s2 = parser.parse(json, String.class); // Parse a JSON number as a Long or Float. json = "123"; Long l3 = parser.parse(json, Long.class); Float f3 = parser.parse(json, Float.class); // Parse a JSON object as a bean. json = "{name:'John Smith',age:21}"; Person p4 = parser.parse(json, Person.class); // Parse a JSON object as a HashMap<String,Person>. json = "{a:{name:'John Smith',age:21},b:{name:'Joe Smith',age:42}}"; Map<String,Person> m5 = parser.parseMap(json, HashMap.class, String.class, Person.class) // Parse a JSON array of integers as a Collection of Integers or int[] array. json = "[1,2,3]"; List<Integer> l6 = parser.parseCollection(json, LinkedList.class, Integer.class); int[] i6 = parser.parse(json, int[].class);
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