Java 类org.springframework.web.bind.ServletRequestParameterPropertyValues 实例源码

private void bind(ServletRequest request, ServletRequestDataBinder dataBinder) {
    MutablePropertyValues mpvs = new ServletRequestParameterPropertyValues(request);
    MultipartRequest multipartRequest = WebUtils.getNativeRequest(request, MultipartRequest.class);
    if (multipartRequest != null) {
        bindMultipart(multipartRequest.getMultiFileMap(), mpvs);
    }

    String attr = HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE;
    Map<String, String> uriVars = (Map<String, String>) request.getAttribute(attr);
    if (uriVars != null) {
        for (Map.Entry<String, String> entry : uriVars.entrySet()) {
            if (mpvs.contains(entry.getKey())) {
                logger.warn("Skipping URI variable '" + entry.getKey()
                        + "' since the request contains a bind value with the same name.");
            } else {
                mpvs.addPropertyValue(entry.getKey(), entry.getValue());
            }
        }
    }

    this.extendDataBinder.doExtendBind(mpvs, dataBinder);

    dataBinder.bind(mpvs);
}

@Test
public void testNoPrefix() throws Exception {
    MockHttpServletRequest request = new MockHttpServletRequest();
    request.addParameter("forname", "Tony");
    request.addParameter("surname", "Blair");
    request.addParameter("age", "" + 50);

    ServletRequestParameterPropertyValues pvs = new ServletRequestParameterPropertyValues(request);
    doTestTony(pvs);
}

@Test
public void testMultipleValuesForParameter() throws Exception {
    MockHttpServletRequest request = new MockHttpServletRequest();
    String[] original = new String[] {"Tony", "Rod"};
    request.addParameter("forname", original);

    ServletRequestParameterPropertyValues pvs = new ServletRequestParameterPropertyValues(request);
    assertTrue("Found 1 parameter", pvs.getPropertyValues().length == 1);
    assertTrue("Found array value", pvs.getPropertyValue("forname").getValue() instanceof String[]);
    String[] values = (String[]) pvs.getPropertyValue("forname").getValue();
    assertEquals("Correct values", Arrays.asList(values), Arrays.asList(original));
}

private Map<String, Object> createMappedValues(Class<?> genericClass, NativeWebRequest webRequest,
        MethodParameter parameter, String prefix) {
    ServletRequest servletRequest = (ServletRequest) webRequest.getNativeRequest();
    Map<String, Object> resultMap = new LinkedHashMap<String, Object>();
    WebDataBinder binderHelper = new WebDataBinder(null);
    // 将数组提取为一个一个的KEY，这里是集合必须要有prefix + '['
    Set<String> keySet = getSortedKeySet(servletRequest, prefix + '[');
    for (String key : keySet) {
        Object genericObj = null;
        if (key.endsWith(separator)) {
            ServletRequestParameterPropertyValues pvs = new ServletRequestParameterPropertyValues(servletRequest,
                    key, StringUtils.EMPTY);

            String realKey = key.substring(0, key.length() - 1);
            genericObj = convertIfDomainClass(webRequest, pvs, genericClass, realKey);
            if (null == genericObj) {
                genericObj = BeanUtils.instantiateClass(genericClass);
            }

            WebDataBinder objectBinder = new WebDataBinder(genericObj, realKey);
            objectBinder.bind(pvs);
        } else {
            Map<String, Object> paramValues = WebUtils.getParametersStartingWith(servletRequest, key);
            if (!paramValues.isEmpty()) {
                if (Collection.class.isAssignableFrom(genericClass)) {
                    genericObj = binderHelper.convertIfNecessary(paramValues.values(), genericClass);
                } else {
                    genericObj = binderHelper.convertIfNecessary(paramValues.values().iterator().next(),
                            genericClass);
                }
            }
        }
        if (genericObj != null) {
            resultMap.put(key, genericObj);
        }
    }
    return resultMap;
}

@Test
public void testNoPrefix() throws Exception {
    MockHttpServletRequest request = new MockHttpServletRequest();
    request.addParameter("forname", "Tony");
    request.addParameter("surname", "Blair");
    request.addParameter("age", "" + 50);

    ServletRequestParameterPropertyValues pvs = new ServletRequestParameterPropertyValues(request);
    doTestTony(pvs);
}

@Test
public void testMultipleValuesForParameter() throws Exception {
    MockHttpServletRequest request = new MockHttpServletRequest();
    String[] original = new String[] {"Tony", "Rod"};
    request.addParameter("forname", original);

    ServletRequestParameterPropertyValues pvs = new ServletRequestParameterPropertyValues(request);
    assertTrue("Found 1 parameter", pvs.getPropertyValues().length == 1);
    assertTrue("Found array value", pvs.getPropertyValue("forname").getValue() instanceof String[]);
    String[] values = (String[]) pvs.getPropertyValue("forname").getValue();
    assertEquals("Correct values", Arrays.asList(values), Arrays.asList(original));
}

public Entity parseModel(HttpServletRequest request) {
    Object o = null;
    try {
        o = getEntityClass().newInstance();
    } catch (Exception e) {
        throw new RuntimeException("无法创建类的实例：" + getEntityClass());
    }
    DataBinder dataBinder = new DataBinder(o);
    dataBinder.registerCustomEditor(Time.class, new TimeEditor());
    MutablePropertyValues mpvs = new ServletRequestParameterPropertyValues(request);
    dataBinder.bind(mpvs);

    return (Entity) o;
}

/**
 * Save element to database
 * 
 * @param type
 *            the domain type
 * @param request
 *            current HttpServletRequest
 * @param page
 *            current page
 * @param size
 *            current page size
 * @param model
 *            current model
 * 
 * @return edit/view template name
 */
@RequestMapping(value = "${crudadmin.url}/post/{type}/{size}/{page}", method = RequestMethod.POST)
public String save(@PathVariable String type, @PathVariable int size, @PathVariable int page,
        HttpServletRequest request, Model model) {
    try {
        CrudAdminRepository repoAdmin = repositoryMap.get(type);
        ServletRequestParameterPropertyValues values = new ServletRequestParameterPropertyValues(request);
        final BindingResult result = repoAdmin.getWebDataBinder(values).getBindingResult();
        Object object = result.getTarget();
        String idString = values.getPropertyValue("id").getValue().toString();
        idString = idString.isEmpty() ? null : idString;
        Object id = null;
        try {
            // existing object ?
            if (idString != null) {
                id = idSerializer.fromString(idString, repoAdmin.getIdType());
                repoAdmin.getId().set(object, id);
            }
            // save
            repoAdmin.getRepositoryObjectSerializable().save(object);
            idString =  getStringFromId(repoAdmin.getId().get(object), repoAdmin);          
            return "redirect:/" + crudAdminProperties.getUrl() + "/view/" + repoAdmin.getDomainTypeNameLowerCase()
                    + "/" + size + "/" + page + "/" + idString+'/';
        } catch (Exception transactionException) {
            Throwable rootCause = transactionException;
            while (rootCause.getCause() != null) {
                rootCause = rootCause.getCause();
            }
            if (rootCause instanceof ConstraintViolationException) {
                ConstraintViolationException constraintViolationException = (ConstraintViolationException) rootCause;
                String message = "";
                for (ConstraintViolation<?> constraintValidation : constraintViolationException
                        .getConstraintViolations()) {
                    message += "<br/><b>" + constraintValidation.getPropertyPath().toString() + "</b> "
                            + constraintValidation.getMessage();
                }
                return doEdit(type, idString, size, page, message, model);
            }
            throw transactionException;
        }

    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }
}

@Test
public void testNoParameters() throws Exception {
    MockHttpServletRequest request = new MockHttpServletRequest();
    ServletRequestParameterPropertyValues pvs = new ServletRequestParameterPropertyValues(request);
    assertTrue("Found no parameters", pvs.getPropertyValues().length == 0);
}

@Test
public void testNoParameters() throws Exception {
    MockHttpServletRequest request = new MockHttpServletRequest();
    ServletRequestParameterPropertyValues pvs = new ServletRequestParameterPropertyValues(request);
    assertTrue("Found no parameters", pvs.getPropertyValues().length == 0);
}