groovy解析xml到pojo

Question

我需要得到这个URL（http：// localhost：8983/solr/select /？q = treen & omitHeader = true）并获取响应为xml，并为每条记录解析它到一个班级，然后创建一个包含所有信息的最终地图。事情是这样的：

class SolrController { 

    def solr= { 
     def map_ = [:] 

     def json = grails.converters.XML.parse(new URL('http://localhost:8983/solr/select/?q=treen&omitHeader=true').text) 

     json.each{ 
      Wikidoc aa = new wikiDoc(id: it.id, title: it.title) 
      map_.put(aa.id, aa) 
     } 
    } 
} 

class wikiDoc{ 
    String id 
    String title 
} 

的XML如下：

<response> 
<result name="response" numFound="18" start="0"> 
<doc> 
<str name="id">2722092</str> 
<arr name="title"> 
<str>David Treen</str> 
</arr> 
</doc> 
<doc> 
<str name="id">3380835</str> 
<arr name="title"> 
<str>Eleição para governador da Luisiana em 1979</str> 
</arr> 
</doc> 
<doc> 
<str name="id">3380827</str> 
<arr name="title"> 
<str>Eleição para governador da Luisiana em 1983</str> 
</arr> 
</doc> 
<doc> 
<str name="id">2722798</str> 
<arr name="title"> 
<str>Edwin Edwards</str> 
</arr> 
</doc> 
<doc> 
<str name="id">1791213</str> 
<arr name="title"> 
<str>Predefinição:Governadores da Luisiana</str> 
</arr> 
</doc> 
<doc> 
<str name="id">2941389</str> 
<arr name="title"> 
<str>Career (filme de 1959)</str> 
</arr> 
</doc> 
<doc> 
<str name="id">1969582</str> 
<arr name="title"> 
<str>Kitty Foyle</str> 
</arr> 
</doc> 
<doc> 
<str name="id">2148082</str> 
<arr name="title"> 
<str>Christmas with the Kranks</str> 
</arr> 
</doc> 
<doc> 
<str name="id">2077295</str> 
<arr name="title"> 
<str>The Sad Sack</str> 
</arr> 
</doc> 
<doc> 
<str name="id">2765563</str> 
<arr name="title"> 
<str>David Vitter</str> 
</arr> 
</doc> 
</result> 
</response> 

我会apreciate解决这个问题，我不明白如何能不能做到，因为无法接取，例如，JSON [1] .ID在进阶 感谢， RR

Answer 1

您应该能够使用类似：

def solr= { 
    def json = grails.converters.XML.parse(new URL('http://localhost:8983/solr/select/?q=treen&omitHeader=true').text) 

    // Start with [:] for every doc element e perform the closure 
    def map_ = json.result.doc.inject([:]) { map, e -> 

    // For this doc element, find the str element with name='id', and get its text() 
    String id = e.str.find { [email protected] == 'id' }.text() 

    // then, find the arr element with name='title', and get the text() from the str element within 
    String title = e.arr.find { [email protected] == 'title' }.str.text() 

    // Then, push this new map entry into our current map 
    map << [ (id): new WikiDoc(id:id, title:title) ] 
    } 
} 

鉴于你的示例XML，在该函数的结束，map_应该等于：

[ "2722092":WikiDoc(2722092, David Treen), 
    "3380835":WikiDoc(3380835, Eleição para governador da Luisiana em 1979), 
    "3380827":WikiDoc(3380827, Eleição para governador da Luisiana em 1983), 
    "2722798":WikiDoc(2722798, Edwin Edwards), 
    "1791213":WikiDoc(1791213, Predefinição:Governadores da Luisiana), 
    "2941389":WikiDoc(2941389, Career (filme de 1959)), 
    "1969582":WikiDoc(1969582, Kitty Foyle), 
    "2148082":WikiDoc(2148082, Christmas with the Kranks), 
    "2077295":WikiDoc(2077295, The Sad Sack), 
    "2765563":WikiDoc(2765563, David Vitter) ]