HttpMessageNotReadableException: JSON parse error Cannot deserialize value of type java.lang.Integer

json

适用于现代 C++ 的 JSON。

项目地址：https://gitcode.com/gh_mirrors/js/json

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Be_insighted

8795人浏览 · 2021-08-30 22:19:07

Be_insighted · 2021-08-30 22:19:07 发布

JSON在序列化时会将字段对应的value视为字符串，会根据接收的字段进行提取值，如果类型数值是值超出范围时，将无法序列化。

org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize value of type `java.lang.Integer` from String "2147483648": Overflow: numeric value (2147483648) out of range of Integer (-2147483648 ~ 2147483647); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.lang.Integer` from String "2147483648": Overflow: numeric value (2147483648) out of range of Integer (-2147483648 - 2147483647)

在程序内部，Long类型的值赋值给Integer时，超过最大值2147483647时，会是负的最小值(-2147483648)。其他数值类型可以类比。如果要校验输入的数值，可以先判断是否是数值型(正则表达式同时限定长度)，满足后在转对应的数值，然后变量接收。

GitHub 加速计划 / js / json

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适用于现代 C++ 的 JSON。

最近提交(Master分支：3 个月前 )

f06604fc * :page_facing_up: bump the copyright years Signed-off-by: Niels Lohmann <mail@nlohmann.me> * :page_facing_up: bump the copyright years Signed-off-by: Niels Lohmann <mail@nlohmann.me> * :page_facing_up: bump the copyright years Signed-off-by: Niels Lohmann <niels.lohmann@gmail.com> --------- Signed-off-by: Niels Lohmann <mail@nlohmann.me> Signed-off-by: Niels Lohmann <niels.lohmann@gmail.com> 2 天前

d23291ba * add a ci step for Json_Diagnostic_Positions Signed-off-by: Harinath Nampally <harinath922@gmail.com> * Update ci.cmake to address review comments Signed-off-by: Harinath Nampally <harinath922@gmail.com> * address review comment Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix typo in the comment Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix typos in ci.cmake Signed-off-by: Harinath Nampally <harinath922@gmail.com> * invoke the new ci step from ubuntu.yml Signed-off-by: Harinath Nampally <harinath922@gmail.com> * issue4561 - use diagnostic positions for exceptions Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix ci_test_documentation check Signed-off-by: Harinath Nampally <harinath922@gmail.com> * address review comments Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix ci check failures for unit-diagnostic-postions.cpp Signed-off-by: Harinath Nampally <harinath922@gmail.com> * improvements based on review comments Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix const correctness string Signed-off-by: Harinath Nampally <harinath922@gmail.com> * further refinements based on reviews Signed-off-by: Harinath Nampally <harinath922@gmail.com> * add one more test case for full coverage Signed-off-by: Harinath Nampally <harinath922@gmail.com> * ci check fix - add const Signed-off-by: Harinath Nampally <harinath922@gmail.com> * add unit tests for json_diagnostic_postions only Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix ci_test_diagnostics Signed-off-by: Harinath Nampally <harinath922@gmail.com> * fix ci_test_build_documentation check Signed-off-by: Harinath Nampally <harinath922@gmail.com> --------- Signed-off-by: Harinath Nampally <harinath922@gmail.com> 2 天前