android - Android 的 Spring

Question

我的代码在创建新的 MappingJacksonHttpMessageConverter 时挂起。我在 Android 4.1.2 上运行。代码如下

public void login(String empCode, String password) {
    RestTemplate rt = new RestTemplate();
    MappingJacksonHttpMessageConverter jackson = new MappingJacksonHttpMessageConverter();
    try{
        rt.getMessageConverters().add(jackson);
        rt.getMessageConverters().add(new StringHttpMessageConverter());
    } catch(Exception ex) {
        ex.printStackTrace();
    }


    String uri = new String("http://43.68.85.137:8080/cimweb/api/authenticateEmployee");
    Employee employee = new Employee();
    employee.setEmpCode(empCode);
    employee.setPassword(password);
    employee.setAuthenticUser(false);

    Employee returns = rt.postForObject(uri, employee, Employee.class);}

这是日志

08-14 16:11:41.250: E/dalvikvm(15517): Could not find class 'org.codehaus.jackson.map.ObjectMapper', referenced from method org.springframework.http.converter.json.MappingJacksonHttpMessageConverter. 08-14 16:11:41.250: W/dalvikvm(15517): VFY: unable to resolve new-instance 807 (Lorg/codehaus/jackson/map/ObjectMapper;) in Lorg/springframework/http/converter/json/MappingJacksonHttpMessageConverter; 08-14 16:11:41.250: D/dalvikvm(15517): VFY: replacing opcode 0x22 at 0x000e

Answer 1

ObjectMapper 不在您的类路径中。如果您使用的是 Eclipse，请右键单击您的项目，然后单击构建路径 > 配置构建路径...

然后添加必要的 jar 文件。确保你同时拥有这两个:

http://www.springsource.org/spring-android

http://jackson.codehaus.org/

获取两者的最新版本并将它们添加到您的类路径中。