Skip to Main Content
Forums

Java EE (Java Enterprise Edition) General Discussion

Announcement

For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle.com. Technical questions should be asked in the appropriate category. Thank you!

parsing a json to a List<List<String>

1102964Jun 13 2017 — edited Jun 13 2017

I have json input as

{
  "data" :[
  {
  "keys": ["123","456","789"],

  "subkeys": [
   ["1", "2", "3"],
   ["1", "2", "3"],
   ["1", "2", "3"]
   ]
  }
  ]
}

I need to get this as List < List < String > > or List < String[] >.

@PUT @Path("/{key}/") 
@Consumes(MediaType.APPLICATION_JSON) 
@Produces(MediaType.APPLICATION_JSON) 
public MyResponse loadData( MonitoringDataRequest monReq) {  
}

@XmlRootElement(name="data")
public class MonitoringDataRequest {
    private List<MonitoringData> data;
   
    @XmlElement
    public void setData(List<MonitoringData> data) {
        this.data = data;
    }
    public List<MonitoringData> getData() {
        return data;
    }
    
}
@XmlRootElement(name="monitoring_data")
public class MonitoringData {
   private List<String> keys;
    private List<SubkeyData> subKeys;
    @XmlElement
    public void setKeys(List<String> keys) {
        this.keys = keys;
    }
    public List<String> getKeys() {
        return keys;
    }
    @XmlElement(name="subkeys")
    public void setSubKeys(List<SubkeyData> subKeys) {
        this.subKeys = subKeys;
    }
    public List<SubkeyData> getSubKeys() {
        return subKeys;
    }
}

@XmlRootElement(name="subkeys")
//@XmlAccessorType(XmlAccessType.NONE)
public class SubkeyData
{
  
    private List<String[]> subkeys;
    @XmlElement
    public void setSubkeys(List<String[]> subkeys)
    {
        this.subkeys = subkeys;
    }
    public List<String[]> getSubkeys()
    {
        return subkeys;
    }
}

I got the error like

Caused by: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 2 counts of IllegalAnnotationExceptions java.util.List is an interface, and JAXB can't handle interfaces. this problem is related to the following location: at java.util.List at private java.util.List foobar.alkohol.register.webservice.jaxws.GetRelationsFromPersonResponse._return

Comments

Christian Neumueller-Oracle
Answer

Hi Tim,

the parser for supporting objects which splits a clob into runnable statements is rather simplistic. A "/" on a single line ends the statement. For example, you could use the multi line code pattern of the APEX export files:

c_pkg_spec_script constant t_max_vc2 := apex_string.join(apex_t_varchar2 (
    'CREATE OR REPLACE PACKAGE #PKG_NAME#',
    'AS',
    '  #FUNC_PROC#',
    'END #PKG_NAME#;',
    '/' ));

Since this is about code generation, I sometimes also write templates like this to get consistent alignment and have the template stand out:

c_pkg_spec_script constant t_max_vc2 := regexp_replace(q'[
  % CREATE OR REPLACE PACKAGE #PKG_NAME#
  % AS
  %   #FUNC_PROC#
  % END #PKG_NAME#;
  % /
  ]',
  '^\s+% ', null, 1, 0, 'm' );

Regards,

Christian

Marked as Answer by Tim Halbach · Sep 27 2020
Tim Halbach

Hi Christian,

Thank you so much for that, that's exactly what I was looking for.

1 - 2
Locked Post
New comments cannot be posted to this locked post.

Post Details

Locked on Jul 11 2017
Added on Jun 13 2017
#java-technologies-for-web-services
0 comments
561 views