  In this paper, we study the cosmological implications of the 100 square
degree Weak Lensing survey (the CFHTLS-Wide, RCS, VIRMOS-DESCART and GaBoDS
surveys). We combine these weak lensing data with the cosmic microwave
background (CMB) measurements from the WMAP5, BOOMERanG, CBI, VSA, ACBAR, the
SDSS LRG matter power spectrum and the Type Ia Supernoave (SNIa) data with the
"Union" compilation (307 sample), using the Markov Chain Monte Carlo method to
determine the cosmological parameters. Our results show that the \Lambda CDM
model remains a good fit to all of these data. For the dynamical dark energy
model with time evolving EoS parameterized as w_{\DE}(a) = w_0 + w_a (1-a), we
find that the best-fit model implying the mildly preference of Quintom model
whose EoS gets across the cosmological constant boundary during evolution.
Regarding the total neutrino mass limit, we obtain the upper limit, \sum
m_{\nu}< 0.471 eV (95% C.L.) within the framework of the flat \Lambda CDM
model. Due to the obvious degeneracies between the neutrino mass and the EoS of
dark energy model, this upper limit will be relaxed by a factor of 2 in the
framework of dynamical dark energy models. For the constraints on the inflation
parameters, we find that the upper limit on the ratio of the tensor to scalar
is r<0.35 (95% C.L.) and the inflationary models with the slope n_s\geq1 are
excluded at more than 2 \sigma confidence level. In this paper we pay
particular attention to the contribution from the weak lensing data and find
that the current weak lensing data do improve the constraints on matter density
\Omega_m, \sigma_8, \sum{m_{\nu}}, and the EoS of dark energy.
