With Spring 3 querying a REST-based service it’s easy. For first, you need to authenticate on Alfresco repository using an Alfresco Ticket instead of an explicit user name and password. A ticket represents a pre-authenticated user who has already performed the login process. To log in, the url is:<\/p>\n
http:\/\/localhost:8081\/alfresco\/service\/api\/login?u=admin&pw=admin<\/pre>\nAssuming the userid and password are correct, Alfresco will respond back with this simple XML:<\/p>\n
\r\nTICKET_18d49dbd5de400c3fa1254b46e46ac51fbd0934e<\/pre>\nUsing Spring and Java you should write something like that:<\/p>\n
RestTemplate restTemplate = new RestTemplate();\r\nMap params = new HashMap();\r\nparams.put(\"user\", login);\r\nparams.put(\"password\", password);\r\nString url = \"http:\/\/localhost:8081\/alfresco\/service\/api\/login?u={user}&pw={password}\";\r\nSource result = restTemplate.getForObject(url, Source.class, params);\r\nXPathOperations xpath = new Jaxp13XPathTemplate();\t\t\t\r\nthis.authenticationTicket = xpath.evaluateAsString(\"\/\/ticket\", result);<\/pre>\nThe RestTemplate<\/a> was introduced in Spring 3 to give REST access the same support as JDBC, passing a Map of keywords and values. It serves as a wrapper to hide all the details in accessing REST resources, including opening and closing connection objects and converting responses to Java objects. Source class is the return type.<\/p>\nOnce authenticated, we are ready to call Web script to query Alfresco repository:<\/p>\n
http:\/\/localhost:8081\/alfresco\/service\/kipcast\/search\/brand.xml?q={keyword}&alf_ticket={ticket}<\/pre>\nThis web script returns an XML like that:<\/p>\n
\r\n\t\r\n\t\ta8a4c38d-67fb-475b-84cb-9cf912dfac58<\/nodeRef>\r\n\t\tName1<\/name>\r\n\t\t\r\n\t\t\tCompany1\r\n\t\t<\/supplierName>\t\t\t\t\t\r\n\t\t\r\n\t\t\tRelatedCommonName1\r\n\t\t<\/relatedCommonName>\r\n\t<\/brand>\r\n<\/brands><\/pre>\nThe above response needs some configuration to marshall objects to XML. All we need to do is define it in our application context and, for that to work fine, you need to tell the marshaller which annotated classes you have:<\/p>\n
\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n com.kipcast.dataModel.drugs.bean.Brands<\/value>\r\n com.kipcast.dataModel.drugs.bean.Brand<\/value>\r\n <\/array>\r\n <\/property>\r\n<\/bean><\/pre>\nAt this point we can simply instantiate a RestTemplate object by calling the getBean method on the application context. This is the Java code to do that:<\/p>\n
ApplicationContext applicationContext = new ClassPathXmlApplicationContext(\"alfresco-context.xml\");\r\nRestTemplate restTemplate = applicationContext.getBean(\"restTemplate\", RestTemplate.class);\t\r\n\r\nMap params = new HashMap();\r\nparams.put(\"ticket\", this.authenticationTicket);\t\r\nparams.put(\"keyword\", key);\t\r\nString url = \"http:\/\/localhost:8081\/alfresco\/service\/kipcast\/search\/brand.xml?q={keyword}&alf_ticket={ticket}\";\r\nBrands brandList = (Brands) restTemplate.getForObject(url, Brands.class, params);<\/pre>\nLast thing is modify the two beans Brands and Brand putting the proper annotations to both classes:<\/p>\n
\r\n@XStreamAlias(\"brands\")\r\npublic class Brands {\r\n\r\n\t@XStreamImplicit\r\n\tList brandList = new ArrayList(); \r\n\t \r\n public List getBrands() {\r\n return brandList;\r\n }\r\n\t\t \r\n\tpublic void setBrands(List brandList) {\r\n\t this.brandList = brandList;\r\n\t}\r\n\t\r\n\tpublic void addBrands(Brand brand) {\r\n\t this.brandList.add(brand);\r\n\t}\r\n\t\r\n}\r\n\r\n@XStreamAlias(\"brand\")\r\npublic class Brand {\r\n\r\n\tprivate String nodeRef;\r\n\tprivate String name;\r\n\tprivate String relatedCommonName;\r\n\tprivate String supplierName;\r\n \r\n \/\/ Getter and setter methods\r\n}\r\n\r\n<\/pre>\nFor more details please take a look to thekspace.com<\/a>, tedwise.com<\/a> and springsource.com<\/a>. <\/p>\nShare this:<\/h3>