    sudo ldconfig
or

    export LD_LIBRARY_PATH=/usr/local/lib
should solve the problem.

You can also use
 

    $ sudo ldconfig # refresh shared library cache.

[as stated at the installation page][1]


  [1]: https://github.com/protocolbuffers/protobuf/blob/master/src/README.md

This issue can be resolved by following these steps:

1.  vim /etc/ld.so.conf
2.  /usr/local/lib(add it in .conf)

This issue can be resolved by following these steps:

    sudo make uninstall
    sudo make distclean
    sudo make clean
    ./configure --prefix=/usr

This cleans the current installation and installs protobuf at /usr
Run ldconfig to update ld.so.cache after making sure that /usr/local/lib is listed in /etc/ld.so.conf. i.e.
Edit /etc/ld.so.conf and append /usr/local/lib to it and run ldconfig


I have the following code:

    UIWebView.loadRequest(NSURLRequest(URL: NSURL(string: &quot;google.ca&quot;)))

I am getting the following error:
&gt; &#39;NSURLRequest&#39; is not convertible to UIWebView.

Any idea what the problem is? 

How to load URL in UIWebView in Swift?

I&#39;m currently having trouble connecting to my webservice on android. I use jackson-core/databind/annotation-2.2.4 and Spring RESTWebService. If I access the URL from the browser I can see the JSON response: (server return List\Shop\ looks like:)

    [{&quot;name&quot;:&quot;shopqwe&quot;,&quot;mobiles&quot;:[],&quot;address&quot;:{&quot;town&quot;:&quot;city&quot;,
    &quot;street&quot;:&quot;streetqwe&quot;,&quot;streetNumber&quot;:&quot;59&quot;,&quot;cordX&quot;:2.229997,&quot;cordY&quot;:1.002539},
    &quot;shoe&quot; [{&quot;shoeName&quot;:&quot;addidas&quot;,&quot;number&quot;:&quot;631744030&quot;,&quot;producent&quot;:&quot;nike&quot;,&quot;price&quot;:999.0,
    &quot;sizes&quot;:[30.0,35.0,38.0]}]

 
From a Client endpoint (Android application) I receive this error message:

    08-26 17:43:07.406: E/AllShopsAsyc(28203): Could not read JSON: Can not deserialize
    instance of com.auginzynier.data.ShopContainer out of START_ARRAY token
    08-26 17:43:07.406: E/AllShopsAsyc(28203):  at [Source:
    com.android.okhttp.internal.http.HttpTransport$ChunkedInputStream@41efbd48; line: 1,
    column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException:
    Can not deserialize instance of com.auginzynier.data.ShopContainer out of START_ARRAY
    token
    08-26 17:43:07.406: E/AllShopsAsyc(28203):  at [Source:
    com.android.okhttp.internal.http.HttpTransport$ChunkedInputStream@41efbd48; line: 1,
    column: 1] 
    08-26 17:43:07.406: E/AllShopsAsyc(28203):
    org.springframework.http.converter.HttpMessageNotReadableException: Could not read
    JSON: Can not deserialize instance of com.auginzynier.data.ShopContainer out of
    START_ARRAY token


My server request

    RestTemplate restTemplate = new RestTemplate();
	restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
	ShopContainer response  = restTemplate.getForObject(url, ShopContainer.class);

where ShopContainer is:

    public class ShopContainer {
       private List&lt;Shop&gt; shops;

structure of Shop, Address and Shoe is : (I&#39;ve omitted getters and setters):

    public class Shop {
	@JsonProperty(&quot;name&quot;)    private String name;
    @JsonProperty(&quot;mobiles&quot;)   private List&lt;String&gt; mobiles = new ArrayList&lt;String&gt;();
	@JsonProperty(&quot;address&quot;)   private Address address;
	@JsonProperty(&quot;shoe&quot;) private List&lt;Shoe&gt; shoe = new ArrayList&lt;Shoe&gt;();

    public class Address {
	@JsonProperty(&quot;town&quot;) private String town;
	@JsonProperty(&quot;street&quot;) private String street;
	@JsonProperty(&quot;streetNumber&quot;) private String streetNumber;
	@JsonProperty(&quot;cordX&quot;) private Double cordX;
	@JsonProperty(&quot;cordY&quot;) private Double cordY;

    public class Shoe {
	@JsonProperty(&quot;shoeName&quot;) private String shoeName;
	@JsonProperty(&quot;number&quot;) private String number;
	@JsonProperty(&quot;producent&quot;) private String producent;
	@JsonProperty(&quot;price&quot;) private Double price;
	@JsonProperty(&quot;sizes&quot;) private List&lt;Double&gt; sizes = new ArrayList&lt;Double&gt;();

I&#39;ve look here and on google but still can&#39;t figure out what I am missing at this point.

Any response would be greatly helpful.

Regards.

**@UPDATE** 

I&#39;ve fixed the JSON by using jackson&#39;s ObjectMapper with RequestMethod.GET. It now returns a String.

    list is List&lt;Shop&gt;

    ObjectMapper mapper = new ObjectMapper();
    mapper.writeValue(new File(&quot;D:\\Android\\shop.json&quot;), list);
    System.out.println(mapper.writerWithDefaultPrettyPrinter().writeValueAsString(list));
    return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(list);

JSON in console looks like:

    [ {
      &quot;name&quot; : &quot;shopqwe&quot;,
      &quot;mobiles&quot; : [ ],
      &quot;address&quot; : {
        &quot;town&quot; : &quot;city&quot;,
        &quot;street&quot; : &quot;streetqwe&quot;,
        &quot;streetNumber&quot; : &quot;59&quot;,
        &quot;cordX&quot; : 2.229997,
        &quot;cordY&quot; : 2.002539
      },
      &quot;shoe&quot; : [ {
        &quot;shoeName&quot; : &quot;addidas&quot;,
        &quot;number&quot; : &quot;631744033&quot;,
        &quot;producent&quot; : &quot;nike&quot;,
        &quot;price&quot; : 10.0,
        &quot;sizes&quot; : [ 30.0, 35.0, 38.0 ]
      } ]
    } ]

Request still doesn&#39;t work - error is the same.

Cannot deserialize instance of object out of START_ARRAY token in Spring Webservice

I have installed protobuf by using following commands:

    ./configure
    make
    make check
    make install

However when I run `protoc` I get following error:

    protoc: error while loading shared libraries: libprotoc.so.8: cannot open shared object file: No such file or directory



Protobuf cannot find shared libraries

I have installed protobuf by using following commands:
<pre><code class="hljs language-go">./configure
make
make check
make install
</code></pre>
However when I run <code>protoc</code> I get following error:
<pre><code class="hljs language-vbnet">protoc: error while loading shared libraries: libprotoc.so.8: cannot open shared object file: No such file or directory
</code></pre>

I&#39;m using protocol buffers  and everything is working fine. except that the fact that I don&#39;t understand  - why do I need the numbered tags in the `proto` file : 

    message SearchRequest {
      required string query = 1;
      optional int32 page_number = 2;
      optional int32 result_per_page = 3;
    }

Sure I&#39;ve read the [**docs**][1] : 

&gt; As you can see, each field in the message definition has a unique
&gt; numbered tag. These tags are used to identify your fields in the
&gt; message binary format, and should not be changed once your message
&gt; type is in use. 

I didn&#39;t understand what difference does it make if I change it . ( I will create a new proto and compile it  - so why does it care ?)


[Another article states that :][2] 

&gt; Numbered fields in proto definitions obviate the need for version
&gt; checks which is one of the explicitly stated motivations for the
&gt; design and implementation of Protocol Buffers. As the developer
&gt; documentation states, the protocol was designed in part to avoid “ugly
&gt; code” like this for checking protocol versions:

    if (version == 3) {
      ...
    } else if (version &gt; 4) {
      if (version == 5) {
        ...
      }
      ...
    }

**Question**

Is it just me or it is completely unclear ?

let me ask it in a different way : 

If I have a proto file like the above file , and then I change it to : 

    message SearchRequest {
      required string query = 3; //reversed order
      optional int32 page_number = 2;
      optional int32 result_per_page = 1;
    }

What does it care ? I re-compile and add the file ( i&#39;ve done it multiple times in the last week).

what am I missing ? can you please supply a human-to human explanation  for this numbered tags ?


  [1]: https://developers.google.com/protocol-buffers/docs/proto
  [2]: http://blog.codeclimate.com/blog/2014/06/05/choose-protocol-buffers/

Protocol buffers - unique numbered tag - clarification?

using protobuf version 2.6.1 ( which i installed via homebrew)  

I am trying to run  

    $ protoc --go_out=../cloud/ *.proto

I keep receiving this error. 

    $ protoc-gen-go: program not found or is not executable
    $ --go_out: protoc-gen-go: Plugin failed with status code 1.

I have the protoc-gen-go installed in my go path. 
Anyone else have this issue?



Unable to build protobuf to go endpoint

I have an existing system, which is using *protobuf-based* communication protocol between GUI and server. Now I would like to add some persistence, but at the moment protobuf messages are straight converted to a third-party custom objects.

Is there a way to convert *proto* messages to *json*, which could be then persisted to database.

**N.B.:** I don&#39;t much like an idea of writing binary protobuf to database, because it can one day become not backward-compatible with newer versions and break the system that way.

Java: JSON -&gt; Protobuf &amp; back conversion

I&#39;m trying to describe an RPC service using Google&#39;s Protocol Buffers

    service WhoamiService {
      rpc WhoAreYou() returns (Whoami) {}
    }
    
    message Whoami {
      optional bytes request_id = 1;
      optional string hostname = 2;
      optional string message = 3;
    }

When I try to compile this definition, I get an error `Expected type name` pointing to the `WhoAreYou()` piece.

It works fine if I replace `WhoAreYou()` with `WhoAreYou(Whoami)`, but in this case, the method does not need any parameters.. Is there a way to do this or is it simply not supported?

Protobuf RPC Service method without parameters

JSON has [`application/json`][1] as a standard. For protobuf some people use [`application/x-protobuf`][2], but I saw something as odd as [`application/vnd.google.protobuf`][3] being proposed. Do we have an RFC or some other standard that I can use as a reference for this?


  [1]: https://stackoverflow.com/questions/477816/what-is-the-correct-json-content-type
  [2]: https://stackoverflow.com/questions/3190329/protocol-buffers-mime-problem
  [3]: https://groups.google.com/forum/#!topic/protobuf/VAoJ-HtgpAI

Content Type	Original Author	Original Content on Stackoverflow
Question	Kshitiz Sharma	View Question on Stackoverflow
Solution 1 - Protocol Buffers	Kshitiz Sharma	View Answer on Stackoverflow
Solution 2 - Protocol Buffers	Abdelrahman Yosry	View Answer on Stackoverflow
Solution 3 - Protocol Buffers	stevenloo	View Answer on Stackoverflow
Solution 4 - Protocol Buffers	Sushantkumar M	View Answer on Stackoverflow

Protobuf cannot find shared libraries

Protocol Buffers Problem Overview

Protocol Buffers Solutions

Solution 1 - Protocol Buffers

Solution 2 - Protocol Buffers

Solution 3 - Protocol Buffers

Solution 4 - Protocol Buffers

Cannot deserialize instance of object out of START_ARRAY token in Spring Webservice

How to load URL in UIWebView in Swift?

Attributions